This is why patents are becoming (or have become) just stupid:
Yep, Twitter is trying to patent “pull to refresh.” But the patent app doesn’t stop there – it goes after anything that issues a command on pulling down a menu.
Source: Oh, That “Pull To Refresh” Thing In iOS? Yeah, Twitter Has A Patent App On That | TechCrunch
The part that really aggravates me is how any fool could replicate what they did, and would have in short order with or without an example. That is not a patentable discovery and the people in the patent offices should be ashamed of their ignorance of simple abstraction and their culpability in strangling the innovation they are supposed to be serving by protecting the truly revolutionary which no one would ever have come up with but for the permission of the genius who invented it also explaining its inner workings.