Celsis In Vitro, Inc (Celsis IVT) has filed a patent infringement lawsuit against Invitrogen Corporation (Invitrogen) and CellzDirect, Inc (CellzDirect) in the United States District Court for the Northern District of Illinois in Chicago and has moved for a preliminary injunction. Invitrogen, the parent of CellzDirect, is itself a wholly-owned subsidiary of Life Technologies of Carlsbad, California. The complaint alleges that certain processes and methods performed by CellzDirect associated with its in vitro drug testing services and its pooled cryopreserved hepatocyte products infringe one or more claims of US Patent No. 7,604,929 (the '929 patent). The complaint also alleges that Invitrogen is selling these infringing products and services, as well as inducing infringement of the '929 patent, and seeks monetary damages and injunctive relief.

Last month, Celsis IVT successfully reached a settlement agreement with XenoTech, LLC, Sekisui Chemical Co Ltd, and Sekisui Medical Co Ltd in a similar patent infringement lawsuit involving the '929 patent. Celsis is represented by Jordan Sigale and Adam Kelly of Loeb & Loeb LLP.

The '929 patent relates to processes and methods for producing cryopreserved hepatocytes. In general, this technology combines hepatocytes from multiple donors to create large lots with targeted activity levels, the result of which is a product that speeds up decision making and reduces the time and cost of drug research. Since 2005, Celsis IVT has used this novel technology to create its unique LiverPool products for drug discovery research. Major pharmaceutical companies around the world have incorporated these LiverPool products into their standard research protocols. Research conducted with LiverPool has confirmed its outstanding efficacy as a research tool in numerous ADME-Tox assays, including metabolic stability and clearance studies. Additional LiverPool product information is available online.

"Celsis believes that innovations are the lifeblood of the life sciences industry. Advancements must be protected and respected if we are to further the cause of cost-effective drug discovery," said Jay LeCoque, CEO of Celsis. "We are extremely disappointed that we have been forced into this litigation, but the predatory pricing employed by Invitrogen and CellzDirect suggests a serious attempt to erode our patent-protected market position for the LiverPool product line." He added, "These tactics are lowering, as well as undermining, the perceived value of new product innovations and inventions. We remain hopeful that the defendants will realize the serious impact of such a precedent on the entire life sciences industry, and that they will work with us to properly resolve this issue."

Celsis IVT, a subsidiary of Celsis Holdings, Inc, itself a subsidiary of Celsis International Ltd, is the premier world provider of specialized in vitro products for the study of metabolism, drug-drug interactions and toxicity in drug discovery and development.

Chicago-based Celsis International Ltd is a leading global provider of innovative life science products and laboratory services to the pharmaceutical and consumer products industries.