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USPTO applies Tianma precedent to unwind TikTok IPRs already underway

By Melissa Ritti ( April 8, 2026, 19:34 GMT | Comment) -- In the first major application of a recent declaration that foreign governments and entities they control aren’t eligible to challenge patents under the America Invents Act, the US Patent and Trademark Office last week vacated a slate of already-instituted inter partes reviews — signaling an intent to aggressively police real-party-in-interest disclosures.The US Patent and Trademark Office is actively enforcing its new limits on foreign state involvement in patent challenges, vacating seven inter partes reviews (IPRs) brought by TikTok Inc. and others last week....

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