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Federal Circuit holds claims for infringement under the doctrine of equivalents barred by prosecution history estoppel

Pharma Tech Solutions, Inc., Decision IT Corp., v. LifeScan, Inc., LifeScan Scotland, LTD., Johnson and Johnson, Appeal 2019-1163, decided November 22, 2019. pharma-tech-solutions-v-lifescan Procedural Background Pharma Tech Solutions, Inc. sued LifeScan, Inc. for infringement of US Patent Nos. 6,153,069 and 6,413,411, both directed to blood glucose monitoring systems. As originally presented, the claims of the […]