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January 17, 2024
Clantech, Inc. v. CoStar Realty Information, Inc.
Reflects complaints, answers, motions, orders and trial notes entered from Jan. 1, 2011.
Additional or older documents may be available in Pacer.
Coverage
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December 11, 2025
The Federal Circuit on Dec. 11 refused to revive a pair of computer font patents challenged by Duolingo Inc. and CoStar Realty Information Inc., backing the Patent Trial and Appeal Board findings that the patents were invalid.
Parties
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