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A License By Any Other Name: When Is an Exclusive License Not an Exclusive License?

By Michael R. Graif
May 02, 2005

Section 261 of the Patent Act (35 U.S.C. '261) contemplates that a patent may be assigned as opposed to licensed. But often the two cannot be so easily distinguished. In practice, the difference between a grant of rights in a patent qualifying as an assignment, an exclusive license or a nonexclusive license often turns on the patentee's granting or withholding of a single right. Yet very different consequences flow from each of those designations.

For example, an assignee of a patent can bring suit in its own name to enforce the patent against infringers. An exclusive licensee may also bring suit to enforce the patent, but must join the patentee as a plaintiff (the only exception being when the exclusive licensee is suing the patentee). An assignee has the right to seek reissue of the patent and to disclaim the patent under 35 U.S.C. '253, while an exclusive licensee does not. A nonexclusive licensee, however, has only a bare right not to be sued, and since it has no expectation of exclusivity, has no right to commence suit against infringers.

This article examines the criteria that the Court of Appeals for the Federal Circuit has used to classify a grant of patent rights. One common thread that emerges from the case law is that in making such a determination, the court routinely looks beyond the label that the patentee has used to identify the grant, in favor of the substance of the rights that the patentee has granted or withheld in the agreement.

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