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ARTICLE · 25 JUNE 2019

Post-Filing Conduct Impacts PTAB RPI/Privity Determinations

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Interactions During Preliminary Proceeding Can Doom PTAB Filing

United StatesIntellectual Property

Interactions During Preliminary Proceeding Can Doom PTAB Filing

Since last summer's decisions in  Applications in Internet Time, LLC v. RPX Corp., and  Worlds Inc. v. Bungie, Inc., the Patent Trial & Appeal Board (PTAB) has seen RPI/privity disputes spring back to the fore. The renewed scrutiny presents challenges for petitioners participating in joint defense groups or those obligated under indemnification agreements.

A precedential decision issued today by the Federal Circuit highlights the danger of new RPI and privy interactions post-petition filing. 

Power Integrations sued Fairchild Semiconductor Corporation for infringement in 2009 for infringement of U.S. Patent No. 6,212,079 ("the '079 patent"). On November 18, 2015, Semiconductor Components Industries, LLC ("ON") entered into an agreement to merge with Fairchild. Prior to the merger being completed, ON filed a petition for IPR of the '079 patent on March 29, 2016 (more than one year after Fairchild

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