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flag The USPTO issued new rules on September 16, 2025, requiring detailed justifications for inconsistent patent decisions and stricter evidence standards in IPRs, raising the bar to challenge patents.

flag On September 16, 2025, the USPTO issued new guidance requiring the PTAB to provide detailed written explanations when its rulings on patent claims differ from prior decisions in federal courts, the ITC, or earlier USPTO proceedings, especially when evidence and arguments are similar. flag This aims to improve consistency and transparency, making it harder for petitioners to challenge patents previously upheld without introducing new evidence or legal arguments. flag The rule applies to both institution and final decisions. flag Separately, a new policy effective September 1, 2025, mandates that all claim limitations in IPR petitions be supported by prior art patents or printed publications, eliminating reliance on general knowledge to fill gaps. flag This raises the bar for challenging patents, increases costs, and may lead to fewer IPRs and more litigation in federal courts.

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