{"id":5977,"date":"2025-05-22T15:35:57","date_gmt":"2025-05-22T15:35:57","guid":{"rendered":"https:\/\/usatrustedlawyers.com\/blog\/patent-strategy-tips-from-fed-circ-kroy-v-groupon-ruling-on-collateral-estoppel\/"},"modified":"2025-05-22T15:35:57","modified_gmt":"2025-05-22T15:35:57","slug":"patent-strategy-tips-from-fed-circ-kroy-v-groupon-ruling-on-collateral-estoppel","status":"publish","type":"post","link":"https:\/\/usatrustedlawyers.com\/blog\/patent-strategy-tips-from-fed-circ-kroy-v-groupon-ruling-on-collateral-estoppel\/","title":{"rendered":"Patent Strategy Tips from Fed. Circ.\u00a0&#8216;Kroy v. Groupon&#8217;\u00a0Ruling on Collateral Estoppel"},"content":{"rendered":"\n<div data-v-1c1aa57e=\"\">\n<div data-v-1c1aa57e=\"\">\n<p><b>By Cory G. Smith,<\/b> <b>George C. Chen<\/b> and\u00a0<b>Ellen Komlos<\/b><\/p>\n<\/div>\n<p>  <!----> <!----> <!----><\/p>\n<div data-v-1c1aa57e=\"\">\n<p>The U.S. Court of Appeals for the Federal Circuit recently addressed the usage of the doctrine of collateral estoppel in patent infringement cases. Specifically, the court considered whether a finding of invalidity of claims by the U.S. Patent and Trademark Office\u2019s Patent Trial and Appeal Board (PTAB) at an <i>inter partes<\/i> review (IPR) could be used to estop a patent holder from asserting patent infringement of different claims of the same patent in district court litigation. In <i>Kroy v. Groupon<\/i>, the Court reversed the trial court and held that a prior finding of invalidity at the PTAB cannot be used to estop a patent infringement suit in district court alleging infringement of different claims of the same patent.<\/p>\n<\/div>\n<p> <!----> <!----> <!----> <!----><\/div>\n","protected":false},"excerpt":{"rendered":"<p>By Cory G. Smith, George C. Chen and\u00a0Ellen Komlos The U.S. Court of Appeals for the Federal Circuit recently addressed the usage of the doctrine of collateral estoppel [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5978,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[6051,6053,257,1879,6052,891,3405,6050],"class_list":["post-5977","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lawyers","tag-circ-kroy","tag-collateral","tag-estoppel","tag-fed","tag-grouponruling","tag-patent","tag-strategy","tag-tips"],"_links":{"self":[{"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/posts\/5977","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/comments?post=5977"}],"version-history":[{"count":0,"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/posts\/5977\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/media\/5978"}],"wp:attachment":[{"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/media?parent=5977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/categories?post=5977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/usatrustedlawyers.com\/blog\/wp-json\/wp\/v2\/tags?post=5977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}