We're talking about practice? Well, I was a practicing engineer before attending law school, and a lot of what I do as an attorney relates to my background in electrical engineering.
Last year, a district court applied the doctrine of collateral estoppel to dismiss an infringement suit after the Patent Trial and Appeal Board decided to cancel the asserted patent's claims in an inter partes review.
The US Court of Appeals for the Federal Circuit considered whether a dependent claim invalidated by collateral estoppel also invalidates its parental independent claim. Google LLC v. Hammond Devel. Int'l, Inc.
In Google v. Hammond, Federal Circuit Court of Appeals considered if a dependent claim invalidated by collateral estoppel also invalidates its parental independent claim. Hammond Development sued Google alleging they infringed Hammond’s automated voice response systems patents.
Federal Circuit affirmed two decisions from District of Delaware regarding collateral estoppel on standing issues and reversed decision from US District Court for Northern District of California regarding effect of license termination on standing. Patent laws from Uniloc case.