Tag: double-patenting
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Patent Law and Drug Innovation: Federal Circuit Upholds Rejection of ImmunoGen’s Patent Application
On March 6, 2025, the Federal Circuit issued its opinion in ImmunoGen, Inc. v. Stewart, affirming the district court’s ruling that denied ImmunoGen’s patent application for a dosing regimen of its antibody drug conjugate (ADC), IMGN853. The court’s decision, rooted in key principles of intellectual property law, particularly focused on the doctrines of indefiniteness and…