{"id":24921,"date":"2026-05-31T05:54:35","date_gmt":"2026-05-31T05:54:35","guid":{"rendered":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/?p=24921"},"modified":"2026-05-31T06:00:34","modified_gmt":"2026-05-31T06:00:34","slug":"calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark","status":"publish","type":"post","link":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/","title":{"rendered":"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against &#8220;ON &amp; ON&#8221; Mark Despite Registered &#8220;ONN&#8221; Trademark"},"content":{"rendered":"\n<h2 id=\"h-introduction\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Calcutta High Court has highlighted the principle of estoppel in interim injunction matters. The Court refused to restrain the use of a similar mark when the plaintiff had previously taken a contradictory stand before the Trademark Registry that its own mark was distinct from cited marks.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0c0c0c;color:#0c0c0c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0c0c0c;color:#0c0c0c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Factual_And_Procedural_Background\" >Factual And Procedural Background<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Dispute\" >Dispute<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Reasoning_And_Analysis_Of_The_Judge\" >Reasoning And Analysis Of The Judge<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Key_Findings_Of_The_Court\" >Key Findings Of The Court<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Final_Decision_Of_The_Court\" >Final Decision Of The Court<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Point_Of_Law_Settled_In_The_Case\" >Point Of Law Settled In The Case<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Case_Details\" >Case Details<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#Legal_Principles_Highlighted\" >Legal Principles Highlighted<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2 id=\"h-factual-and-procedural-background\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Factual_And_Procedural_Background\"><\/span>Factual And Procedural Background<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Biswanath Hosiery Mills Limited, a manufacturer and seller of hosiery products, holds registrations for the word and label mark &#8220;ONN&#8221;. The company filed a commercial suit seeking an injunction against Anila Kedia for using the mark &#8220;ON &amp; ON&#8221; on similar goods, alleging infringement and passing off. The plaintiff claimed exclusive rights under Section 28 of the Trade Marks Act, 1999, due to its registration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Commercial Court at Rajarhat, by order dated 23 December 2025, dismissed the plaintiff\u2019s application for an interim injunction under Order 39 Rules 1 and 2 read with Section 151 of the Code of Civil Procedure. Aggrieved by this, Biswanath Hosiery Mills filed an appeal before the Intellectual Property Rights Appellate Division of the Calcutta High Court.<\/p>\n\n\n\n<h2 id=\"h-dispute\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dispute\"><\/span>Dispute<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The central dispute was whether the plaintiff was entitled to an interim injunction restraining the defendant from using &#8220;ON &amp; ON&#8221;. The plaintiff argued that its registered mark &#8220;ONN&#8221; gave it exclusive rights and the defendant\u2019s mark was deceptively similar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The defendant contended that the plaintiff had suppressed material facts and was estopped from claiming similarity because, in 2011, while responding to objections from the Trademark Registrar, the plaintiff had described &#8220;ONN&#8221; as a coined, meaningless expression visually and structurally different from marks like &#8220;ON-N-ON&#8221;.<\/p>\n\n\n\n<h2 id=\"h-reasoning-and-analysis-of-the-judge\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Reasoning_And_Analysis_Of_The_Judge\"><\/span>Reasoning And Analysis Of The Judge<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Division Bench found that when the plaintiff applied for registration of &#8220;ONN&#8221; in 2011, the Registrar raised objections under Section 11, citing similar marks, including &#8220;ON-N-ON&#8221;. In reply dated 30 September 2011, the plaintiff\u2019s advocates asserted that &#8220;ONN&#8221; is a coined and meaningless expression, visually, structurally, and conceptually different from the cited marks. They provided a comparative table and relied on case law to argue dissimilarity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The bench observed that the defendant is using &#8220;ON &amp; ON&#8221;. Applying the same logic the plaintiff had used before the Calcutta High Court denies trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.registrar, there appeared to be no similarity sufficient for granting an injunction at the prima facie stage. The Court held that the plaintiff\u2019s earlier stand created estoppel, preventing it from now claiming deceptive similarity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The judges emphasised that while considering an interim injunction application, the court looks at the overall equities. Given the plaintiff\u2019s previous representation that its mark is distinct, it could not demonstrate a strong prima facie case of infringement or passing off at this stage.<\/p>\n\n\n\n<h3 id=\"h-key-findings-of-the-court\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Findings_Of_The_Court\"><\/span>Key Findings Of The Court<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The plaintiff had earlier argued before the Trademark Registry that &#8220;ONN&#8221; was distinct from similar cited marks.<\/li>\n\n\n\n<li>The defendant was using the mark &#8220;ON &amp; ON&#8221; on similar goods.<\/li>\n\n\n\n<li>The plaintiff&#8217;s previous stand operated as estoppel.<\/li>\n\n\n\n<li>No strong prima facie case was established for the grant of an interim injunction.<\/li>\n\n\n\n<li>The balance of equities did not favour the plaintiff at the interim stage.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-final-decision-of-the-court\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Decision_Of_The_Court\"><\/span>Final Decision Of The Court<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Calcutta High Court dismissed the appeal (FMAT-IPD\/2\/2026) along with connected applications on 15 May 2026. The order of the Commercial Court refusing the interim injunction was upheld. No order as to costs was passed.<\/p>\n\n\n\n<h2 id=\"h-point-of-law-settled-in-the-case\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Point_Of_Law_Settled_In_The_Case\"><\/span>Point Of Law Settled In The Case<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The judgement reinforces that a party seeking an injunction in a trademark matter cannot take contradictory stands at different forums. Statements made before the Trademark Registry regarding the distinctiveness of one\u2019s mark can operate as estoppel in subsequent civil proceedings when claiming similarity against another mark.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It also reiterates the standard principles for granting interim injunctions:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prima facie case<\/li>\n\n\n\n<li>Balance of convenience<\/li>\n\n\n\n<li>Irreparable harm<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These requirements must be satisfied convincingly, especially when prior conduct of the plaintiff weakens its case.<\/p>\n\n\n\n<h2 id=\"h-case-details\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Case_Details\"><\/span>Case Details<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Particulars<\/th><th>Details<\/th><\/tr><tr><td>Title<\/td><td>Biswanath Hosiery Mills Limited vs Anila Kedia<\/td><\/tr><tr><td>Date of Order<\/td><td>15 May 2026<\/td><\/tr><tr><td>Case Number<\/td><td>FMAT-IPD\/2\/2026<\/td><\/tr><tr><td>Neutral Citation<\/td><td>2026:CHC-AS:749-DB<\/td><\/tr><tr><td>Name of Court<\/td><td>High Court at Calcutta (Civil Appellate Jurisdiction, Intellectual Property Rights Appellate Division)<\/td><\/tr><tr><td>Name of Honourable Judges<\/td><td>Justice Debangsu Basak and Justice Md. Shabbar Rashidi<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"h-legal-principles-highlighted\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Legal_Principles_Highlighted\"><\/span>Legal Principles Highlighted<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Doctrine of estoppel in trademark litigation.<\/li>\n\n\n\n<li>Effect of representations made before the Trademark Registry.<\/li>\n\n\n\n<li>Assessment of deceptive similarity at the interim stage.<\/li>\n\n\n\n<li>Requirements for grant of interim injunction in trademark disputes.<\/li>\n\n\n\n<li>Importance of consistency in legal pleadings and submissions.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Disclaimer:<\/strong> Readers are advised not to treat this as a substitute for legal advice, as it may contain errors in perception, interpretation, and presentation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction The Calcutta High Court has highlighted the principle of estoppel in interim injunction matters. The Court refused to restrain the use of a similar mark when the plaintiff had previously taken a contradictory stand before the Trademark Registry that its own mark was distinct from cited marks. Factual And Procedural Background Biswanath Hosiery Mills<\/p>\n","protected":false},"author":56,"featured_media":24918,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"two_page_speed":[],"_jetpack_memberships_contains_paid_content":false,"_joinchat":[],"footnotes":""},"categories":[21],"tags":[5149],"class_list":["post-24921","post","type-post","status-publish","format-standard","has-post-thumbnail","category-intellectual-property","tag-intellectual-property"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6.1 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against &quot;ON &amp; ON&quot; Mark Despite Registered &quot;ONN&quot; Trademark - Legal Service India - Articles<\/title>\n<meta name=\"description\" content=\"The Calcutta High Court denies the trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against &quot;ON &amp; ON&quot; Mark Despite Registered &quot;ONN&quot; Trademark\" \/>\n<meta property=\"og:description\" content=\"The Calcutta High Court denies the trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/\" \/>\n<meta property=\"og:site_name\" content=\"Legal Service India - Articles\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/legalservicesind\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-31T05:54:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-31T06:00:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1170\" \/>\n\t<meta property=\"og:image:height\" content=\"658\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"ADVOCATE AJAY AMITABH SUMAN\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@legalserviceind\" \/>\n<meta name=\"twitter:site\" content=\"@legalserviceind\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"ADVOCATE AJAY AMITABH SUMAN\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/\"},\"author\":{\"name\":\"ADVOCATE AJAY AMITABH SUMAN\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#\\\/schema\\\/person\\\/96ae33c2330691e5b3ccd88cf127a305\"},\"headline\":\"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against &#8220;ON &amp; ON&#8221; Mark Despite Registered &#8220;ONN&#8221; Trademark\",\"datePublished\":\"2026-05-31T05:54:35+00:00\",\"dateModified\":\"2026-05-31T06:00:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/\"},\"wordCount\":770,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/160234.jpg\",\"keywords\":[\"Intellectual Property\"],\"articleSection\":[\"Intellectual Property\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/\",\"name\":\"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against \\\"ON &amp; ON\\\" Mark Despite Registered \\\"ONN\\\" Trademark - Legal Service India - Articles\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/160234.jpg\",\"datePublished\":\"2026-05-31T05:54:35+00:00\",\"dateModified\":\"2026-05-31T06:00:34+00:00\",\"description\":\"The Calcutta High Court denies the trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/160234.jpg\",\"contentUrl\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/160234.jpg\",\"width\":1170,\"height\":658,\"caption\":\"Calcutta High Court Applies Estoppel In Trademark Dispute\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Intellectual Property > Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against \u201cON & ON\u201d Mark Despite Registered \u201cONN\u201d Trademark\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#website\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/\",\"name\":\"Legal Service India - Law Articles\",\"description\":\"Legal Service India - Law Article Directory is the oldest in India since 2000, with thousands of article written by lawyers, law Students and Scholars on all branches of law\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#organization\",\"name\":\"Legal Service India\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/logo-circle-1.png\",\"contentUrl\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/logo-circle-1.png\",\"width\":105,\"height\":95,\"caption\":\"Legal Service India\"},\"image\":{\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/legalservicesind\",\"https:\\\/\\\/x.com\\\/legalserviceind\",\"https:\\\/\\\/www.youtube.com\\\/@LegalServiceIndia-lsi\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/#\\\/schema\\\/person\\\/96ae33c2330691e5b3ccd88cf127a305\",\"name\":\"ADVOCATE AJAY AMITABH SUMAN\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"\\\/\\\/www.gravatar.com\\\/avatar\\\/b894b0814afe1239db393e20da4b2e76?s=96&#038;r=g&#038;d=mm\",\"url\":\"\\\/\\\/www.gravatar.com\\\/avatar\\\/b894b0814afe1239db393e20da4b2e76?s=96&#038;r=g&#038;d=mm\",\"contentUrl\":\"\\\/\\\/www.gravatar.com\\\/avatar\\\/b894b0814afe1239db393e20da4b2e76?s=96&#038;r=g&#038;d=mm\",\"caption\":\"ADVOCATE AJAY AMITABH SUMAN\"},\"description\":\"Professional and Literary Profile Mr. Ajay Amitabh Suman, Advocate, is an alumnus of the Campus Law Centre, University of Delhi, with over 20 years of experience in IP litigation before the Delhi High Court. He currently serves as a Patent and Trademark Attorney at United &amp; United, a leading intellectual property law firm. Deeply committed to legal scholarship, he has authored more than 900 articles on intellectual property law, published on major platforms including Legal Service India, Bar &amp; Bench, Live Law, SCC Online Blog, Legal Desire, SpicyIP, among others. Beyond his legal practice, he is also an accomplished writer and poet, with over 1,500 literary works and more than 20 books published in Hindi and English. His journey reflects a unique blend of legal advocacy and creative expression, inspired by a passion for justice, knowledge, and reform.\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/author\\\/ajayamitabhsuman\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against \"ON &amp; ON\" Mark Despite Registered \"ONN\" Trademark - Legal Service India - Articles","description":"The Calcutta High Court denies the trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/","og_locale":"en_US","og_type":"article","og_title":"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against \"ON &amp; ON\" Mark Despite Registered \"ONN\" Trademark","og_description":"The Calcutta High Court denies the trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.","og_url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/","og_site_name":"Legal Service India - Articles","article_publisher":"https:\/\/www.facebook.com\/legalservicesind","article_published_time":"2026-05-31T05:54:35+00:00","article_modified_time":"2026-05-31T06:00:34+00:00","og_image":[{"width":1170,"height":658,"url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg","type":"image\/jpeg"}],"author":"ADVOCATE AJAY AMITABH SUMAN","twitter_card":"summary_large_image","twitter_creator":"@legalserviceind","twitter_site":"@legalserviceind","twitter_misc":{"Written by":"ADVOCATE AJAY AMITABH SUMAN","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#article","isPartOf":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/"},"author":{"name":"ADVOCATE AJAY AMITABH SUMAN","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#\/schema\/person\/96ae33c2330691e5b3ccd88cf127a305"},"headline":"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against &#8220;ON &amp; ON&#8221; Mark Despite Registered &#8220;ONN&#8221; Trademark","datePublished":"2026-05-31T05:54:35+00:00","dateModified":"2026-05-31T06:00:34+00:00","mainEntityOfPage":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/"},"wordCount":770,"commentCount":0,"publisher":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#organization"},"image":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#primaryimage"},"thumbnailUrl":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg","keywords":["Intellectual Property"],"articleSection":["Intellectual Property"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/","name":"Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against \"ON &amp; ON\" Mark Despite Registered \"ONN\" Trademark - Legal Service India - Articles","isPartOf":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#primaryimage"},"image":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#primaryimage"},"thumbnailUrl":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg","datePublished":"2026-05-31T05:54:35+00:00","dateModified":"2026-05-31T06:00:34+00:00","description":"The Calcutta High Court denies the trademark injunction, holding prior Trademark Registry statements created estoppel against similarity claims.","breadcrumb":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#primaryimage","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg","contentUrl":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg","width":1170,"height":658,"caption":"Calcutta High Court Applies Estoppel In Trademark Dispute"},{"@type":"BreadcrumbList","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/calcutta-high-court-applies-estoppel-in-trademark-dispute-no-injunction-against-on-on-mark-despite-registered-onn-trademark\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/"},{"@type":"ListItem","position":2,"name":"Intellectual Property > Calcutta High Court Applies Estoppel In Trademark Dispute: No Injunction Against \u201cON & ON\u201d Mark Despite Registered \u201cONN\u201d Trademark"}]},{"@type":"WebSite","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#website","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/","name":"Legal Service India - Law Articles","description":"Legal Service India - Law Article Directory is the oldest in India since 2000, with thousands of article written by lawyers, law Students and Scholars on all branches of law","publisher":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#organization","name":"Legal Service India","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#\/schema\/logo\/image\/","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2025\/06\/logo-circle-1.png","contentUrl":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2025\/06\/logo-circle-1.png","width":105,"height":95,"caption":"Legal Service India"},"image":{"@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/legalservicesind","https:\/\/x.com\/legalserviceind","https:\/\/www.youtube.com\/@LegalServiceIndia-lsi"]},{"@type":"Person","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/#\/schema\/person\/96ae33c2330691e5b3ccd88cf127a305","name":"ADVOCATE AJAY AMITABH SUMAN","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"\/\/www.gravatar.com\/avatar\/b894b0814afe1239db393e20da4b2e76?s=96&#038;r=g&#038;d=mm","url":"\/\/www.gravatar.com\/avatar\/b894b0814afe1239db393e20da4b2e76?s=96&#038;r=g&#038;d=mm","contentUrl":"\/\/www.gravatar.com\/avatar\/b894b0814afe1239db393e20da4b2e76?s=96&#038;r=g&#038;d=mm","caption":"ADVOCATE AJAY AMITABH SUMAN"},"description":"Professional and Literary Profile Mr. Ajay Amitabh Suman, Advocate, is an alumnus of the Campus Law Centre, University of Delhi, with over 20 years of experience in IP litigation before the Delhi High Court. He currently serves as a Patent and Trademark Attorney at United &amp; United, a leading intellectual property law firm. Deeply committed to legal scholarship, he has authored more than 900 articles on intellectual property law, published on major platforms including Legal Service India, Bar &amp; Bench, Live Law, SCC Online Blog, Legal Desire, SpicyIP, among others. Beyond his legal practice, he is also an accomplished writer and poet, with over 1,500 literary works and more than 20 books published in Hindi and English. His journey reflects a unique blend of legal advocacy and creative expression, inspired by a passion for justice, knowledge, and reform.","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/author\/ajayamitabhsuman\/"}]}},"jetpack_featured_media_url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/2026\/05\/160234.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts\/24921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/users\/56"}],"replies":[{"embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/comments?post=24921"}],"version-history":[{"count":2,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts\/24921\/revisions"}],"predecessor-version":[{"id":25256,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts\/24921\/revisions\/25256"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/media\/24918"}],"wp:attachment":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/media?parent=24921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/categories?post=24921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/tags?post=24921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}