Tuesday, March 08, 2005

Re-exam sought of patents involved in new stem cell litigation

from :

ThermoGenesis reported on March 1, 2005 that the patent office had reviewed and rejected the claims of a PharmaStem patent related to collection and preservation of umbilical cord and placental blood stem cells and the use of the cells to treat disease.

That patent was a basis for a lawsuit PharmaStem pursued against several defendants, including the ViaCord unit of ViaCell Inc. (Nasdaq: VIAC) and Cryo-Cell International Inc. (OTCBB: CCEL). A jury in October 2003 found that the patents were valid and enforceable, but a federal judge in Delaware overturned the ruling in December 2004. PharmaStem filed suit in January, 2005 against some of the same defendants on the basis of two other patents -- the patents that ThermoGenesis now has asked regulators to review.


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