Osiris Therapeutics successfully defends key stem cell patent challenge Osiris Therapeutics announced the successful conclusion of a patent challenge in Australia by an opponent whose identity under Australian law was not disclosed. The patent at issue covers the administration of mesenchymal stem cells, or MSCs, including Prochymal, for the treatment of inflammatory conditions involving the gastrointestinal tract, including Crohn's disease and ulcerative colitis. As acknowledged in the Australian Official Journal of Patents Supplement, all claims to the patent will be maintained in full. The claims specifically include the use of allogeneic MSCs, an attribute central to making an off-the-shelf MSC product possible.
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