Different Evidentiary Burdens in IPR Proceedings and District Court Means No Collateral Estoppel Effect on Related Patent Claims
2 months ago 21
After ten years of litigation, the Federal Circuit found that the district court conducted an improper collateral estoppel analysis and upheld ParkerVision’s position on each of the appealed issues.[1] Background In 2011, ParkerVision sued Qualcomm alleging that it infringed its patented technology for down-converting electromagnetic signals using “energy sampling.” A jury rejected Qualcomm’s invalidity claims and found... Continue Reading
