Legal Opinion

Cosmokey Solutions Gmbh & Co. v. Duo Security LLC

Court of Appeals for the Federal Circuit

Decided October 4, 2021No. 20-2043PublishedCited by 36 opinions

1Opinion of the Court

Case: 20-2043 Document: 52 Page: 1 Filed: 10/04/2021 United States Court of Appeals for the Federal Circuit ______________________ COSMOKEY SOLUTIONS GMBH & CO. KG, Plaintiff-Appellant v. DUO SECURITY LLC, FKA DUO SECURITY, INC., Defendant-Appellee ______________________ 2020-2043 ______________________ Appeal from the United States District Court for the District of Delaware in No. 1:18-cv-01477-CFC, Judge Colm F. Connolly. ______________________ Decided: October 4, 2021 ______________________ SCOTT THOMAS WEINGAERTNER, White & Case LLP, New York, NY, argued for plaintiff-appellant. Also…

2Cases cited17 opinions

  1. Mayo Collaborative Services v. Prometheus Laboratories, Inc.Supreme Court of the United States · 2012
  2. Enfish, LLC v. Microsoft CorporationCourt of Appeals for the Federal Circuit · 2016
  3. Berkheimer v. Hp Inc.Court of Appeals for the Federal Circuit · 2018
  4. Content Extraction & Transmission LLC v. Wells Fargo BankCourt of Appeals for the Federal Circuit · 2014
  5. BASCOM Global Internet Services, Inc. v. AT&T Mobility LLCCourt of Appeals for the Federal Circuit · 2016

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3Cited by36 opinions

  1. Authentixx LLC v. Pickleball OpCo LLCDistrict Court, N.D. Texas · 2026
  2. B.E. Technology, L.L.C. v. Google LLCDistrict Court, D. Delaware · 2026
  3. B.S.D Crown, Ltd. v. Amazon.com, Inc.District Court, N.D. California · 2024
  4. Buffalo Patents, LLC v. Motorola Mobility LLCDistrict Court, N.D. Illinois · 2023
  5. Clear Imaging Research LLC v. Google LLCDistrict Court, S.D. California · 2025

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