But that only limits the time period for which damages may be claimed - it does not forfeit the ability to claim damages altogether, which is what may happen with trademarks; that's a pretty significant difference.
Ok, that is an interesting aspect of US patent law I wasn't familiar with. But this doesn't look like a universal property of patents, more likely it's specific to the US?
https://www.law.cornell.edu/uscode/text/35/286
But that only limits the time period for which damages may be claimed - it does not forfeit the ability to claim damages altogether, which is what may happen with trademarks; that's a pretty significant difference.
Ok, that is an interesting aspect of US patent law I wasn't familiar with. But this doesn't look like a universal property of patents, more likely it's specific to the US?