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November 21, 2023
IBM v. Zillow Group, Inc.
Reflects complaints, answers, motions, orders and trial notes entered from Jan. 1, 2011.
Additional or older documents may be available in Pacer.
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December 09, 2025
The Federal Circuit on Tuesday affirmed a Patent Trial and Appeal Board decision that invalidated some claims while preserving others in an IBM patent covering a single sign-on technology, rejecting the company's arguments that the board relied on arguments not made by the patent challenger.
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