If Company A holds a patent and knows that Company B is infringing but does nothing about it is their a statue of limitations?
OSS Ping..
In fact many companies have intentionally done this kind of thing. It's called a submarine patent.
You patent something quietly and submit it to a standards board. When lots of people are using it then you spring your patent on them and start collecting.
The JPEG patent was one such case.
As a set amount of time in law, no (assuming the patent doesn't expire). But a company that sat on the knowledge too long might not do well in court under the legal doctrine of laches -- creating unfairness through delay.