International Business Machines v. Zillow Group, Inc.

Federal Circuit affirmed Patent Trial and Appeal Board's inter partes review decision on IBM's single sign-on patent No. 7,631,346. IBM has asserted the patent against Zynga, Airbnb, and other services using third-party sign-in options. Court upheld Board's finding that broader claims are unpatentable over Sunada reference but affirmed that narrower claims were not shown unpatentable. Rakuten Rewards petitioned the IPR, joined by Zillow. Separately, Federal Circuit affirmed JMOL for Goodyear in $64 million trade secret case involving self-inflating tire technology.