PDL BioPharma, Inc. (PDL) (Nasdaq: PDLI) today announced that on December 15, 2010, the U.S. Patent and Trademark Office (the PTO) terminated its interference proceeding between certain claims of the Company's Queen et al., U.S. Patent No. 5,585,089, (the '089 Patent) and certain pending claims of Adair et al., U.S. Application No. 08/846,658, (the '658 Application) in favor of the Company's '089 Patent.
The PTO held that the involved claims in the '658 Application, are not patentable. UCB Pharma S.A. is the assignee of the '658 Application.