Precision BioSciences Files Seventh and Eighth Patent Infringement Lawsuits Against CELLECTIS SA, Seeks Permanent Injunction and Monetary Damages

RESEARCH TRIANGLE PARK, NC--(Marketwire - March 27, 2012) - Precision BioSciences, Inc., a leader in the field of genome engineering, today announced that it has filed two additional patent infringement lawsuits against Cellectis SA and a number of its affiliates in the U.S. District Court for the Eastern District of North Carolina. The lawsuits seek a ruling that Cellectis' manufacture, use, sale, and importation of certain engineered meganucleases infringe U.S. Patent Nos. 8,143,015 and 8,143,016, which relate to Precision BioSciences' ground-breaking Directed Nuclease Editor™ genome engineering technology. The lawsuits request monetary damages as well as a permanent injunction preventing Cellectis from making, using, selling, offering for sale, or importing infringing engineered meganucleases in the United States. Precision BioSciences previously announced that it had filed suit against Cellectis for alleged infringement of U.S. Patent Nos. 8,021,867, 8,119,381, 8,119,361, 8,124,369, 8,129,134, and 8,133,697.

"Continuous innovation is at the core of our mission at Precision BioSciences," said Todd Melby, Chief Operating Officer at Precision BioSciences. "And as leading pioneers in the genome engineering industry, we cannot allow the continued sale and importation of genome engineering methods and tools that violate key claims in Precision's patent estate."

About Precision BioSciences
Precision BioSciences' mission is to continually provide, improve, and enable the world's most powerful genome engineering technology. Precision's proprietary Directed Nuclease Editor™ (DNE) technology enables the production of genome editing enzymes that can insert, remove, modify, and regulate essentially any gene in mammalian or plant cells.

Precision BioSciences' vision is to be the conduit through which the world's greatest genome engineering challenges are solved. Precision has successfully utilized its DNE technology to create innovative products in partnerships with many of the world's largest biopharmaceutical, agbiotech, and animal research firms. Internally, Precision is developing applications of DNE in biological production and human therapeutics. For additional information, please visit

Precision BioSciences:
Chelsea Lynam
phone: +1 919 314-5512
E-mail: Email Contact

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