https://patentbrief.org/company/abgenix-inc Plain-English explanations of patents assigned to Abgenix Inc, newest first. en-us Mon, 15 Jun 2026 05:59:44 GMT https://patentbrief.org/patent/us/6682736/enbrel-etanercept Abgenix's 1999 patent on fully human monoclonal antibodies that bind to CTLA-4, a protein brake on the immune system, allowing T-cells to stay active and attack cancer cells. Tue, 27 Jan 2004 00:00:00 GMT https://patentbrief.org/patent/us/6682736/enbrel-etanercept