Case: 24-1360 Document: 64 Page: 1 Filed: 12/11/2025

NOTE: This disposition is nonprecedential.

United States Court of Appeals for the Federal Circuit ______________________ CLANTECH, INC., MODERN FONT APPLICATIONS LLC, Appellants v. COSTAR REALTY INFORMATION, INC., DUOLINGO, INC., Appellees ______________________ 2024-1360, 2024-1361 ______________________ Appeals from the United States Patent and Trademark Office, Patent Trial and Appeal Board in Nos. IPR2022- 00799, IPR2022-00800. ______________________ JUDGMENT ______________________ ANDREW TIMOTHY OLIVER, Amin Turocy & Watson, LLP, San Jose, CA, argued for all appellants.

INGE A. OSMAN, Latham & Watkins LLP, Washington, DC, argued for appellees. Also represented by GABRIEL K.

BELL, ASHLEY M. FRY.

Case: 24-1360 Document: 64 Page: 2 Filed: 12/11/2025

JAMES C. WATSON, TraskBritt, PC, Salt Lake City, UT, for appellant Clantech, Inc. ______________________ THIS CAUSE having been heard and considered, it is ORDERED and ADJUDGED: PER CURIAM (LOURIE, REYNA, and CUNNINGHAM, Cir- cuit Judges).

AFFIRMED. See Fed. Cir. R. 36.

ENTERED BY ORDER OF THE COURT

December 11, 2025 Date