Complex sentence: The courts found in favor of GameTech however, and allowed the device to be sold in Japan, as the original Famicom was first sold in 1983 and most of Nintendo's essential patents on the system have expired.
Split into simpler sentences: The courts found in favor of GameTech however, and allowed the device to be sold in Japan. In any case, the original Famicom was first sold in 1983, and most of Nintendo's essential patents on the Famicom have expired.