What documents can be recorded with the USPTO related to patent assignments?

According to 37 CFR 3.11, the following documents can be recorded with the USPTO related to patent assignments:

• Assignments of applications, patents, and registrations
• Other documents relating to interests in patent applications and patents
• Documents affecting title to applications, patents, or registrations
• Licenses, assignments, or other interests of the Government in or under patents or patent applications
• Joint research agreements or excerpts of joint research agreements

These documents must be accompanied by completed cover sheets as specified in 37 CFR 3.28 and 3.31.