Chapter 300: Ownership and Assignment

Inventorship is always granted to the individual who invented the subject matter of the patent. However, the inventor(s) may sell or transfer the rights to the invention via an assignment. This chapter discusses several topics pertaining to assignments; including the recording and establishment of the assignment by the PTO.
Ownership and assignment are tested on the patent bar exam to a small extent. You may expect a question or two relating to the details of recording assignments. Pay close attention to the section dealing with issuing a patent to an assignee and the proper signatures involved. The PTO loves to ask questions referring to who may or may not sign a particular type of document.

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- Click on image to see full-size view or download the mindmap PDF.
- Download the PDF outline.

- Become familiar with ownership and assignment.
- Learn the details of recording assignments.
- Know who needs to sign which documents.
- Learn who the patent issues to when an assignment has been made.
- Determine which cases require the establishment of ownership.
- Know the following rules:
37 C.F.R. 1.12 |
Assignment records open to public inspection. |
37 C.F.R. 1.323 |
Certificate of correction of applicant’s mistake. |
37 C.F.R. 1.324 |
Correction of inventorship in patent, pursuant to 35 U.S.C. 256. |
37 C.F.R. 3.73 |
Establishing right of assignee to take action. |
37 C.F.R. 3.81 |
Issue of patent to assignee. |

- Assignment
- Certificate of correction
- Cover sheets
- Inventorship
- Joint owners
- Multiple assignees
- Ownership
- Patent number