Nintendo lost a court case against a medical-device maker and has to pay $10m over a patent related to the motion-sensing technology used in the Wii controller.
Health technology company iLife sued Nintendo in 2013, saying Wii console controllers used technology it had patented. It originally sought damages of $144m.
In court, Nintendo said the technology in iLife's patent was not specific enough to cover the way Nintendo used motion-sensing technology.
iLife said the system of measuring movement was the same as the technology it had developed for monitors that could spot if old people had fallen or babies were at risk of cot death.
A jury agreed with this assertion when the case and damages were decided last week.
Nintendo said it intended to continue its defense of its own technology in the courts.