U.S. Patent No. 4,020,201

3 opinions in this collection construe or address U.S. Patent No. 4,020,201. View the patent on Google Patents.

• January 19, 2022 Fed. Cir. Polygroup Limited MCO v. Willis Electric Company, Ltd., No. 21-1401 (Fed. Cir. Jan. 19, 2022) Reversed in Part
• July 1, 2019 Fed. Cir. Polygroup Limited MCO v. Willis Electric Company, Ltd., No. 18-2137 (Fed. Cir. July 1, 2019) Vacated & Remanded
• January 28, 2019 Fed. Cir. Polygroup Limited MCO v. Willis Electric Company, Ltd., No. 18-1745 (Fed. Cir. Jan. 28, 2019) Affirmed in Part