CO-ASSIGNEE. One who is assignee with another.
     2. In general, the rights and duties of co-assignees are equal.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
(PFE) is a co-assignee on all four awarded and allowed patents.
(Leiden, Netherlands; 31-71-524-7429) announced the filing of initial documents in a United States patent interference proceeding against PPL Therapeutics plc (Edinburgh, Scotland) and its co-assignee, Zymogenetics, Inc.
CRYO-CELL and the University are co-assignees of a patent application which has been filed covering the technology to which the company has been granted worldwide marketing rights.