I happened to be looking through some N64 technical documents including a list of patents[1] and noticed that many of them seemed to have expired today!<p>including ones related to:<p>Z-buffering[2]<p>Starfox 64[3]<p>and Mario 64[4]<p>[1]: <a href="https://forums.cen64.com/viewtopic.php?f=16&t=7" rel="nofollow">https://forums.cen64.com/viewtopic.php?f=16&t=7</a><p>[2]: <a href="https://patents.google.com/patent/US6414678" rel="nofollow">https://patents.google.com/patent/US6414678</a><p>[3]: <a href="https://patents.google.com/patent/US6540612" rel="nofollow">https://patents.google.com/patent/US6540612</a><p>[4]: <a href="https://patents.google.com/patent/US6331146" rel="nofollow">https://patents.google.com/patent/US6331146</a>