Term ends Jun 22, 2036 · High confidence
Held by Portable Multimedia Ltd.
Filed Dec 31, 2019 as application 29/719,017 · Granted Jun 22, 2021
Base term, 15 years from grant
Today
2021
2036
Clock starts
Jun 22, 2021
Jun 22, 2021
Term ends
Jun 22, 2036
Jun 22, 2036
base term
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US D923,073, to Jun 22, 2036. The term already ends on or before that date, so the cap shortened nothing.
15 years from grant
Base term
No maintenance fees are payable on this kind of patent.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its base term, 15 years from grant, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. No maintenance fees are payable on this kind of patent. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 15 years from grant | Granted Jun 22, 2021 | Jun 22, 2036 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US D923,073) | resolves to Jun 22, 2036, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Computed term end | The steps above, in order | Jun 22, 2036 | High confidence |
This family
| US D923,075 | this patent Jun 2036 | Jun 2036 |
| US D923,074 | In force Jun 2036 | Jun 2036 |
| US D923,073 | In force Jun 2036 | Jun 2036 |
| US D923,076 | In force Jun 2036 | Jun 2036 |
The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Feb 5, 2020 Reel 51725, frame 374 | Grant, Robert George; Lambert, Graham Keith; Hill, Ceri | Portable Multimedia Ltd. | Assignment of Assignor's Interest |
| May 17, 2021 Reel 56349, frame 410 | Grant, Robert George; Lambert, Graham Keith; Hill, Ceri | Portable Multimedia Limited | Corrective Assignment to Correct the Receiving Party Name Previously Recorded at Reel: 51725 Frame: 374. Assignor(S) Hereby Confirms the Assignment. |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center
No maintenance fees are payable on this kind of patent, so the record carries no fee events.
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Alerts on its grants, lapses and transfers.
What's changing
Jun 2036
Term ends Jun 22, 2036. No maintenance fees are payable on this kind of patent
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US D923,073, ends no earlier than this term, so it caps nothing.
Citations
49
later US patents cite this one
That is top 5% of design patents granted in 2021 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.