federal circuit

The Federal Circuit’s Exafer Ltd. v. Microsoft Corp. decision is a meaningful correction to an increasingly common mistake in patent-damages litigation: treating the use of an unaccused product metric as automatically fatal. In a precedential opinion issued on March 6, 2026, the court held that...

The Federal Circuit’s March 6, 2026 decision in Exafer Ltd. v. Microsoft Corp. is an important reminder that Daubert does not create a shortcut to wipe out patent damages theories simply because they use a product-based royalty base. In a precedential opinion, the court reversed a district...

Microsoft’s courtroom win over a patent challenge to its Azure networking stack has been short‑lived: the U.S. Court of Appeals for the Federal Circuit has reversed a Western District of Texas ruling that had struck Exafer Ltd.’s damages testimony and then entered summary judgment of no damages...