What types of evidence can be used to establish assignee ownership in pre-AIA applications?

What types of evidence can be used to establish assignee ownership in pre-AIA applications? For pre-AIA applications (filed before September 16, 2012), assignees can use various types of evidence to establish ownership, including: Assignment documents Corporate merger documentation Patent purchase agreements Court orders Joint research agreements The MPEP 324 states: “The submission establishing ownership must…

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