ArthroVision Terminates Patent Dispute With Chondrometrics GmbH

MONTREAL, QUEBEC--(Marketwire - July 13, 2009) - ArthroVision Inc., wholly owned subsidiary of Horizon Sciences and Technologies Inc., announces that it has terminated the German patent dispute with Chondrometrics GmbH and its director Dr. Felix Eckstein involving ArthroVision's European Patent EP 1 230 561.

ArthroVision conducted proceedings against Chondrometrics and Dr. Eckstein in Germany, alleging that the use of the software "Chondrometrics_Work" would infringe its patent EP 1 230 561 relating to a system and process for monitoring progression of Osteoarthritis and other bone/cartilage diseases. Chondrometrics then filed a nullity action against the German part of ArthroVision's patent. The District Court of Munich ruled in first instance that the Chondrometrics' software would not infringe ArthroVision's patent rights. ArthroVision had filed an appeal against this decision that it strongly disagrees with.

ArthroVision decided to terminate the dispute with Chondrometrics in order to avoid further time and effort. Consequently, ArthroVision has withdrawn the appeal in the infringement proceedings and terminated the nullity proceedings with the consent of Chondrometrics, after ArthroVision waived its patent rights to the German part of EP 1 230 516. Also, ArthroVision became aware of a recent study of the University of Pittsburgh, USA, which leads to the conclusion that the technique of manual segmentation, which is allegedly applied by Chondrometrics, is significantly less efficient and reproducible than a semi-automated method.

About Horizon Sciences & Technologies and ArthroVision Inc.

Horizon Sciences & Technologies Inc., a Canadian biopharmaceutical company located in Montreal, Quebec, Canada, is involved, in collaboration with its partners, in the discovery and development of new and innovative technologies for the prevention, the diagnosis and the treatment of osteoarthritis. Its subsidiary, ArthroVision Inc., a Montreal, Quebec, based company, is engaged in the research and development of imaging technology to assess the effect of therapeutics in the treatment of osteoarthritis. ArthroVision has developed imaging systems that allow the precise measurement and quantification of cartilage from magnetic resonance images (MRIs) and the tracking of cartilage degradation over time. These technologies represent a breakthrough for osteoarthritis research. ArthroVision has extensive expertise in conducting clinical trials for the assessment of the efficacy of new drugs and compounds that aim at reducing the progression of osteoarthritis.

Forward-Looking Statements

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