I hope I could help.
14 Can I use MIT license to give some of my previous written code to employer so that I protect myself and don't lose my copyright? mar 2 '13
9 I have a previous invention (software / framework) that I plan to use on my new job. What happens to my copyright if I improve it during the job? feb 7 '13
3 Is there a license for selling a software with the sources so buyer can make modifications without claiming ownership of the code or distributing it? feb 7 '13