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Stressgen's European patent upheld against challenge from Antigenics
By Angela McDaniels
Seattle, Oct. 19 - Stressgen Biotechnologies said an Opposition Division of the European Patent Office has granted judgment in favor of Stressgen on a patent challenge from Antigenics. The patent is now in force until 2018.
Antigenics may appeal the decision.
Antigenics filed an opposition to Stressgen's patent in 2003 and cited over 140 documents to support its arguments, said Stressgen.
The patent covers fusion proteins made of a heat shock protein and a human papillomavirus (HPV) protein antigen that are capable of inducing or enhancing a cell-mediated, cytolytic immune response in patients.
The claims also cover related products, such as nucleic acids encoding the fusion protein and pharmaceutical compositions containing the fusion protein.
Stressgen, a biopharmaceutical company based in Victoria, B.C., develops stress protein-based immunotherapeutics, also known as therapeutic vaccines, used in the treatment of infectious diseases and cancer.
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