You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
rule 702
About this tag
The tag 'rule 702' on WindowsForum.com covers the legal standard for expert testimony in patent litigation, particularly in cases involving Microsoft. Recent discussions focus on the Federal Circuit's Exafer v. Microsoft decision, which clarified that a royalty base using unaccused product metrics like Azure virtual machine hours can be valid under Rule 702 if a causal connection is shown. The ruling vacated the exclusion of a damages expert and summary judgment for Microsoft, highlighting the importance of proper expert evidence in patent damages cases. This tag is relevant for those interested in patent law, expert testimony standards, and Microsoft-related litigation.
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...