Published in Medical Patent Law Weekly, March 26th, 2008
In its latest communication, the Patent Office issued Notices of Intent to Issue Ex Parte Reexamination Certificates for U.S. Patent Numbers 5,843,780 and 6,200,806, which claim preparations of, respectively, primate and human embryonic stem cells and methods for their isolation. During the proceedings, the Wisconsin Alumni Research Foundation (WARF), an organization to which the patents are assigned, made minor amendments to certain claims to improve clarity...
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