A common ownership problem
Since 2012, a company can file a patent as the applicant without recording the assignment from the inventors. That convenience left a lot of patents that look owned on the surface but have an incomplete recorded chain. Here is why the gap exists and how to spot it.
A patent starts with its inventors. Under U.S. law the named inventors are the original owners of the invention, and ownership moves to a company only through an assignment.
Before the America Invents Act, patent applications were generally filed in the names of the inventors, and the inventor assignment was usually recorded around the same time. The America Invents Act, effective September 16, 2012, changed the filing rules so that a company that owns the invention, or has the right to own it, can be named as the applicant and file directly. This was meant to make filing simpler for companies.
The side effect is a recording gap. A company can be listed as the applicant on the application without ever recording an assignment from the inventors. Nothing forces that assignment onto the public record at filing time.
This is the heart of the problem. Two different things can look the same at a glance:
A related trap is the obligation to assign. Many employment agreements say an employee will assign inventions to the employer. That promise is not the transfer itself. Until an actual assignment is signed, and ideally recorded, a named inventor may still hold an interest in the patent, even though everyone assumed the company owned it outright.
The check is a comparison, done for each patent:
A gap does not always mean there is a real problem. Sometimes the assignment exists but was never recorded, and it can be recorded later. The point of the check is to surface the gap early so it can be fixed before it holds up a deal.
Patencial does the comparison across a whole portfolio at once. For each patent it matches the named inventors against the recorded assignments and flags the ones where an inventor assignment is missing, with a note when the patent was filed after the America Invents Act took effect.
Each finding cites the USPTO record so an attorney can confirm it and decide whether it needs to be cured before closing. Patencial surfaces the gap. The legal significance is for the attorney to weigh.
It is a patent where the company is named as the applicant, but no assignment from the named inventors to that company was ever recorded with the USPTO. The front of the patent looks like the company owns it, while the recorded chain of ownership is incomplete.
The America Invents Act, effective September 16, 2012, let a company that owns or has the right to own an invention file the patent application as the applicant. Before that, applications were generally filed in the names of the inventors. The change was meant to simplify filing, but it made it possible to file without recording the inventor assignment.
No. Being listed as the applicant shows who filed the application. A recorded assignment is the document that actually transfers ownership from the inventors to the company. A patent can name a company as applicant while the recorded assignment is missing.
No. An employment agreement may require an employee to assign inventions to the company, but that promise is not the transfer itself. Until an actual assignment is signed, and ideally recorded, the inventor may still hold an interest in the patent.
A buyer wants clean, recorded ownership from every named inventor to the current owner. If an inventor assignment was never executed or never recorded, the seller may not be able to transfer full title, which can lead to holdbacks, price adjustments, or trouble enforcing the patent later.
Patencial compares the named inventors on each patent against the recorded assignments, and flags patents filed after the America Invents Act where the company appears as applicant but an inventor assignment is missing from the record. Each flag cites the USPTO record.
Patent chain of title verification
Reconstruct ownership from the named inventors to the current assignee, with every defect cited to a USPTO record.
Read guide35 U.S.C. 261: patent assignments and recording
What Section 261 requires for a valid assignment, and why the three-month recording window decides priority.
Read guidePatent security interests and liens
How a pledged patent shows up in the USPTO record, and why an unreleased lien blocks a clean transfer.
Read guidePatent due diligence for M&A
What patent diligence checks before a deal closes, starting with clean ownership of every patent.
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