Apple has filed yet another lawsuit against Espoo, Finland-based Nokia, according to Bloomberg. The new suit, filed in the High Court in London, alleges that one of Nokia’s European patents for scrolling technology on a touchscreen device is invalid. Nokia has filed multiple suits against Apple in Great Britain, Germany, the Netherlands, and the United States, claiming infringement on some 37 patents. “Nokia is confident that all of the 37 patents it has asserted against Apple” are valid, Nokia spokesman Mark Durrant told Bloomberg. “We are examining the filing and will take whatever actions are needed to protect our rights.” The legal battle between the two companies dates back to October 2009, and also includes a countersuit against Nokia filed by Apple in the U.S., as well as opposing complaints filed with the U.S. International Trade Commission.