No this is a discussion between the 2 decades for patents, which seems fair, versus the 7 decades for copyrighted material, which doesn't :)
As far as copyrighted content stuff... I think a year or two is enough. Especially for movies and music which, afaik, make most of their money right after release. This would disincentivize most of the blatant copyright abuse happening today, while still allowing the creators to earn their money.