Pfizer sues Sun Pharma to block generic Bosulif

Pfizer has filed a lawsuit in an attempt to block generic drug manufacturer Sun Pharmaceutical Industries Ltd from selling a cheaper version of Pfizer’s leukemia drug Bosulif, according to a Reuters report.

In a complaint filed on Thursday in the US District Court for the District of Delaware, Pfizer claimed Sun Pharmaceutical Industries’ proposed generic would infringe two of its Bosulif patents, which are set to expire in 2025 and 2026, the Reuters report said.