> you need to actively litigate infringements if you want to keep it.
No you don't. That being said, what is the point of a patent if not to enforce the right of exclusivity it grants as to the invention?
Yeah you're right, I was thinking of trademarks. I just think the system is very cumbersome and antiquated, these days it mostly serves to benefit patent lawyers rather than inventors and small businesses, aside from highly regulated fields where things move slower.
That poster mixed it up with trademarks, for which enforcement is required to maintain its validity.
> what is the point of a patent if not to enforce the right of exclusivity it grants
Usually it's to defend against another company using a "blocking patent" by pursuing you for infringing their patent which is built upon the thing you patented, doing the next step which was always obvious to you.
So that you can continue building what you started in the first place, instead of being shut down while someone else takes your idea forward.
Not for exclusivity.