Term ends Sep 1, 2029 · High confidence
20-year base term ends Sep 1, 2029
Held by Xero Limited
Filed Apr 12, 2016 as application 15/096,305 · Granted Dec 8, 2020
Base term plus 547 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2009
2029
Clock starts
Sep 1, 2009
Sep 1, 2009
Term ends
Sep 1, 2029
Sep 1, 2029
Granted
Dec 8, 2020
Dec 8, 2020
base term
fee events
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
547
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,370,307, US 8,725,697, US 9,330,137.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
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 runs 547 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 2 maintenance fees is paid so far. 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, 20 years from filing | Clock starts Sep 1, 2009, when application 12/551,790, the earliest non-provisional in its chain, was filed (this one was filed Apr 12, 2016) | Sep 1, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +547 days, USPTO patent term adjustment record | Mar 2, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,370,307, US 8,725,697, US 9,330,137) | capped to Sep 1, 2029 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 1, 2029 | High confidence |
This family
| US 8,370,307 | In force Dec 2030 | Dec 2030 |
| US 8,725,697 | In force Sep 2029 | Sep 2029 |
| US 9,330,137 | In force Sep 2029 | Sep 2029 |
| US 10,860,432 | this patent Sep 2029 | Sep 2029 |
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 |
|---|---|---|---|
| Apr 14, 2016 Reel 38279, frame 655 | Wolfe, Andrew | Empire Technology Development LLC | Assignment of Assignor's Interest |
| Apr 14, 2016 Reel 38279, frame 784 | Wolfe, Andrew | Glitter Technology LLP | Assignment of Assignor's Interest |
| Apr 14, 2016 Reel 38279, frame 892 | Intellectual Ventures Asia Pte. Ltd. | Empire Technology Development LLC | Assignment of Assignor's Interest |
| Apr 14, 2016 Reel 38431, frame 503 | Glitter Technology LLP | Intellectual Ventures Asia Pte. Ltd. | Assignment of Assignor's Interest |
| Jan 29, 2019 Reel 48373, frame 217 | Empire Technology Development LLC | Crestline Direct Finance, L.p. | Security Interest |
| Mar 19, 2021 Reel 55650, frame 943 | Crestline Direct Finance, L.p. | Empire Technology Development LLC | Release of Security Interest |
| Jun 30, 2021 Reel 56719, frame 48 | Empire Technology Development, LLC | Xero Limited | Assignment of Assignor's Interest |
| Sep 22, 2025 Reel 72936, frame 464 | Crestline Direct Finance, L.P., as Collateral Agent | Empire Technology Development LLC | Release of Security Interest in Patents, Recorded on January 29, 2019 at Reel 048373 Frame 0217 |
| Jun 22, 2026 Reel 75799, frame 53 | Crestline Direct Finance, L.P., as Collateral Agent | Empire Technology Development LLC | Release of Security Interest in Patents, Recorded on January 29, 2019, at Reel/Frame 048373/0217 |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
What's changing
Sep 2029
Term ends Sep 1, 2029. Maintenance fees still fall due before then
Note
The 547 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,370,307, US 8,725,697, US 9,330,137.
Citations
9
later US patents cite this one
That is top 25% of utility patents granted in 2020 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.