I think you need to look into some of the patents that have been granted before you dismiss the concerns.
Software patents are pretty much a racket, used to keep small players out of the market. I say this as a developer whose company was threatened by a patent troll, who did not realize his supposed “invention” came years after our product was already developed.
In related news, the scrollbar had been patented as of 2004. By Lexmark.
http://www.prior-ip.com/patent/27128737/
About time. I’d been using it royalty free since at least 1990.
Oh, and I almost forgot the double click, patented in 2002: http://www.appleinsider.com/articles/10/12/30/double_click_patent_lawsuit_attacks_apples_iphone_ipad.html