I thought loop-blinn expired a while ago, or is the cubic curves separate from quadratic?
Re:A Decade of Slug
by amagitakayosi on Wednesday March 18, 2026 @04:45AM
(#47423215)
IIRC their patent is mainly for cubic curve filling. It's still in effect:
https://patents.google.com/patent/US7564459B2/en
Also, Microsoft's Loop-Blinn patent for cubic curves will expire on March 25. These might change the landscape of text rendering...