ArthroVision, a wholly-owned subsidiary of Canadian firm Horizon Sciences & Technologies, filed a patent infringement complaint in the District Court of Munich, accusing Chondrometrics of infringing the German part of ArthroVision's European patent.

ArthroVision said it believes it is the first to have developed an MRI system capable of making reliable quantitative measurements of cartilage loss attributable to disease in human and veterinary patients. The complaint serves to protect its intellectual property, according to the Montreal-based company.