[ft-devel] some ClearType patents expired

[Alexei Podtelezhnikov]

Hi guys,

Most ClearType patents had 1998-10-07 as their priority date. They
including the filtering ones appear to have expired.

Just saying...

Alexei

[Behdad Esfahbod]

All Micrsofot patents are free to use as of four weeks ago:


https://azure.microsoft.com/en-us/blog/microsoft-joins-open-invention-network-to-help-protect-linux-and-open-source/

Post by Alexei Podtelezhnikov
Hi guys,
Most ClearType patents had 1998-10-07 as their priority date. They
including the filtering ones appear to have expired.
Just saying...
Alexei
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[Alan Coopersmith]

Post by Behdad Esfahbod
https://azure.microsoft.com/en-us/blog/microsoft-joins-open-invention-network-to-help-protect-linux-and-open-source/

Only for Linux, not other OS'es, and FreeType is used on far more than
just Linux.

[Alexei Podtelezhnikov]

Post by Alan Coopersmith
Only for Linux, not other OS'es, and FreeType is used on far more than
just Linux.

Patents expire regardless. From the laundry list here
<https://en.wikipedia.org/wiki/ClearType#Patents>, most have *already*
expired. After January 12 2019 there will be just one active hinting
patent left, after July 30, 2019, there will be no active patents. So
even Solaris can use ClearType rather soon or possibly already.

[Alan Coopersmith]

Post by Alexei Podtelezhnikov

Post by Alan Coopersmith
Only for Linux, not other OS'es, and FreeType is used on far more than
just Linux.

Patents expire regardless.

I wasn't arguing againt that - that was in response to "All Microsoft patents
are free to use as of four weeks ago" in describing the grant to OIN covering
their unexpired patents that apply to Linux.