On 31 May 2011 16:38, Romain d'Alverny <[email protected]> wrote: > On Tue, May 31, 2011 at 16:31, andre999 <[email protected]> wrote: >> Michael Scherer a écrit : >>> Supixel rendering, there is a patent on it : >>> http://lists.gnu.org/archive/html/freetype/2006-09/msg00064.html >>> >> The reference is from September 2006, almost 5 years old. There is no >> indication of expiry dates, and rather limited details on the patent claims >> involved, apparently now held by Microsoft. (The further link to Microsoft >> is no longer valid.) >> It would seem advisable to have more info before making a decision. > > And you're welcome to search for it and document this situation. Such as with: > > * http://www.freetype.org/patents.html > * http://en.wikipedia.org/wiki/ClearType#Patents > * http://en.wikipedia.org/wiki/Subpixel_rendering#Patents > > Said patents are due to expire in 2018/19 according to these sources. > > Romain >
One more source, the all very-extensive http://david.freetype.org/cleartype-patents.html written by the freetype upstream lead dev. -- Ahmad Samir
