title: US court invalidates Pfizer’s Celebrex® patent.
mesh_terms: D000068579:Celecoxib; D052246:Cyclooxygenase 2 Inhibitors; D004345:Drug Industry / Q000331:legislation & jurisprudence*; D007603:Jurisprudence; D010330:Patents as Topic; D011720:Pyrazoles; D013449:Sulfonamides; D014481:United States
chemical_list: D052246:Cyclooxygenase 2 Inhibitors; D011720:Pyrazoles; D013449:Sulfonamides; D000068579:Celecoxib