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United States Patent and Trademark Office › Trial Practice Guidance › Patent Invalidity

The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.... more +
The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.    less -
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Acting Director Clarifies Multi-Petition Policy for Competing Constructions

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On June 25, 2025, Acting Director Coke Stewart released an informative decision vacating institution of inter partes review (“IPR”) based on two petitions that were primarily filed to present two different constructions....more

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Two Many IPRs: Different References Insufficient for Parallel IPRs

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The Patent Trial and Appeal Board (“PTAB”) recently denied institution in an inter partes review (“IPR”) where Petitioner later filed a parallel petition against the same claims of the same patent.   Shenzhen Root Tech. Co.,...more

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