Term ends no later than Feb 28, 2038 · Medium confidence

In force on USPTO's status record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.

Held by Dyson Technology Limited

Filed Jun 26, 2019 as application 29/696,270 · Granted Feb 28, 2023

Base term, 15 years from grant

Today

15 years from grant

Ends no later than Feb 28, 2038

2023 2038

Clock starts
Feb 28, 2023

Ends no later than
Feb 28, 2038

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.

Unresolved

Terminal disclaimer

On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.

15 years from grant

Base term

No maintenance fees are payable on this kind of patent.

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 on file with no resolved reference, so no cap is applied and none is guessed. No maintenance fees are payable on this kind of patent. Confidence: Medium. 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 Feb 28, 2023	Feb 28, 2038	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 on file (approved), reference document not resolved	no cap applied, and none guessed	Medium confidence
Patent term extension	None on file	no change	High confidence
Computed term end	The steps above, in order	no later than Feb 28, 2038	Medium confidence

This family

US D718,911	In force Dec 2028	Dec 2028
US D753,356	In force Apr 2030	Apr 2030
US D778,013	In force Jan 2032	Jan 2032
US D798,514	In force Sep 2032	Sep 2032
US D834,774	In force Nov 2033	Nov 2033
US D857,314	In force Aug 2034	Aug 2034
US D979,863	this patent no later than Feb 2038	no later than Feb 2038

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
Oct 19, 2021 Reel 57828, frame 735	Vanderstegen-drake, Mark Stamford; Gammack, Peter David; Marsh, Jonathan George; Bates, Adam James	Dyson Technology Limited	Assignment of Assignor's Interest

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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Feb 2038

Term ends no later than Feb 28, 2038. No maintenance fees are payable on this kind of patent

Note

A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed

Open question

A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Feb 28, 2038. We will not guess the cap.

Citations

later US patent cites this one

That is below the median of design patents granted in 2023 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

This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.

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