Don't forget. Apple deal with Microsoft also ran out for using the patent technology for the fonts.
Apple and Microsoft signed a patent cross-licensing agreement in 1997, back when Microsoft was so dominant they were under anti-trust investigation from the US government, and Apple was a breath away from bankruptcy.
http://assets.sbnation.com/assets/1292505/584.pdf
Microsoft invented sub-pixel antialiasing and have been awarded multiple patents for the technology:
https://en.wikipedia.org/wiki/ClearType#Patents
The deal expired in 2017.
Ironic then that Mojave still looks *much* clearer than windoze7 (bootcamp'd) on exactly the same hardware (on a Dell 1920x1080)!