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Fed. Cir.

Clantech, Inc. v. Costar Realty Information, Inc., No. 24-1360 (Fed. Cir. Dec. 11, 2025)

Affirmed
Rule 36 Affirmance
Court
U.S. Court of Appeals for the Federal Circuit
Case No.
No. 24-1360
Decided
December 11, 2025
Judge
Per curiam (Rule 36)
Document
Rule 36 Judgment
Length
2 pages
Download Opinion (PDF)

NOTE: This disposition is nonprecedential.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.

2JAMES 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

Figure on page 2 of the opinion

December 11, 2025

Date

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Cite this opinion

Clantech, Inc. v. Costar Realty Information, Inc., No. 24-1360 (Fed. Cir. Dec. 11, 2025).

Record ID
CAFC-24-1360-20251211
Permalink
https://patentcasewatch.com/opinions/CAFC-24-1360-20251211

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Source: Federal Circuit opinions and orders · retrieved August 15, 2026 · Report an error