Nintendo has won a patent case in Seattle federal court concerning their Mii avatar creation system. 

RecogniCorp LLC, a patent-assertion company, filed the case on December 20, 2011, claiming that Nintendo’s Mii system, used on Wii, Wii U and 3DS, infringed their patent. However, Judge Richard A. Jones found that U.S. Patent No. 8,005,303 was invalid. 

The patent related to “encoding/decoding of images that can be separated into their constituent parts as may be used in composite picture systems used in law enforcement, artistic creations, recreation and education.”

Judge Jones held that the patent was an improper attempt to monopolise mathematical operations, which cannot be patented. 

Ajay Singh, Nintendo of America’s Director of Litigation and Compliance, said in regards to the case: “We are very pleased with Judge Jones’ decision, which finally put an end to RecogniCorp’s attempt to cover inventions to which it has no rights.”

Nintendo have fended off many legal cases over the years. They have been targeted for the Wii’s motion technology, the clocks in the DSi and 3DS, the 3DS’ glasses-free 3D and Donkey Kong’s name.

According to Singh: “Nintendo will continue to protect its products and innovations against accusations of patent infringement.”