Well, with real property there are things like adverse possession [1]. This isn't exactly "use it or lose it", but it does contain the idea that if rights aren

Well, with real property there are things like adverse possession [1]. This isn't exactly "use it or lose it", but it does contain the idea that if rights aren't exercised there may be implicit acquiescence to another's actions. [1] http://en.wikipedia.org/wiki/Adverse_possession http://en.wikipedia.org/wiki/Adverse_possession