U.S. Patent Office Reaffirms PharmaStem Patent
News Jan 08, 2007
PharmaStem Therapeutics, Inc. has announced that the United States Patent and Trademark Office has issued a ruling confirming the validity of PharmaStem Therapeutics, Inc.'s patent about the Isolation and Preservation of Fetal and Neonatal Hematopoietic Stem and Progenitor Cells of the Blood and Methods of Therapeutic Use.
The Patent Office has issued a Notice of Intent to Issue a Reexamination Certificate after re-evaluating PharmaStem's U.S. Patent No. 5,192,553, thus terminating the re-examination proceeding.
In its Decision the U.S. Patent Office stated that "the Prior art rejections of record have been withdrawn ... The primary references in these rejections Douay, Koike, Ende, Knudtzon, do not teach or suggest that cryopreserved fetal stem cells would obtain hematopoietic reconstitution of a human..."
“I am gratified by this Decision by which the Patent Office confirms again the pioneering contributions of PharmaStem in the development of umbilical cord blood preservation and its therapeutic use,” said Nicholas Didier, CEO and President of PharmaStem.
PharmaStem is the successor to Biocyte Corporation, and the pioneer in the development of umbilical cord blood preservation and its therapeutic use. Umbilical cord and placental blood are rich in stem cells that can reconstitute human blood and immune systems.
The spatial and temporal dynamics of proteins or organelles plays a crucial role in controlling various cellular processes and in development of diseases. However, acute control of activity at distinct locations within a cell cannot be achieved. A new chemo-optogenetic method enables tunable, reversible, and rapid control of activity at multiple subcellular compartments within a living cell.