Term ends Jul 15, 2034 · High confidence
20-year base term ends Jul 15, 2034
Held by Kymab Limited
Filed Aug 12, 2014 as application 14/457,536 · Granted Apr 28, 2015
Base term, 20 years from filing
Today
2014
2034
Clock starts
Jul 15, 2014
Jul 15, 2014
Term ends
Jul 15, 2034
Jul 15, 2034
Granted
Apr 28, 2015
Apr 28, 2015
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 8,945,560, to Jul 15, 2034. The term already ends on or before that date, so the cap shortened nothing.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
25
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 20-year base term, 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. All three maintenance fees are recorded paid; no more fees are due. 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 Jul 15, 2014, when application 14/331,730, the earliest non-provisional in its chain, was filed (this one was filed Aug 12, 2014) | Jul 15, 2034 | 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 8,945,560) | resolves to Jul 15, 2034, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 15, 2034 | High confidence |
This family
| US 9,914,769 | In force Dec 2033 | Dec 2033 |
| US 8,945,560 | In force Jul 2034 | Jul 2034 |
| US 9,017,678 | this patent Jul 2034 | Jul 2034 |
| US 8,986,694 | In force Jul 2034 | Jul 2034 |
| US 8,980,273 | In force Jul 2034 | Jul 2034 |
| US 8,986,691 | In force Jul 2034 | Jul 2034 |
| US 8,992,927 | In force Jul 2034 | Jul 2034 |
| US 9,045,545 | In force Jul 2034 | Jul 2034 |
8 of 25 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Aug 21, 2014 Reel 33580, frame 681 | Clube, Jasper Rupert | Kymab 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 · 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.
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Alerts on its grants, lapses and transfers.
What's changing
Jul 2034
Term ends Jul 15, 2034. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,945,560, ends no earlier than this term, so it caps nothing.
Citations
5
later US patents cite this one
That is below the median of utility patents granted in 2015 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.