Term ends Jan 14, 2035 · High confidence
20-year base term ends Oct 9, 2033
Held by Ene Holdings Ltd.
Filed Dec 2, 2013 as application 14/123,504 · Granted Aug 8, 2017
Base term plus 462 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Oct 9, 2013
Oct 9, 2013
Term ends
Jan 14, 2035
Jan 14, 2035
Granted
Aug 8, 2017
Aug 8, 2017
base term
patent term adjustment
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
462
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
5
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 462 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 Oct 9, 2013, when application PCT/IB2013/059223, the earliest non-provisional in its chain, was filed (this one was filed Dec 2, 2013) | Oct 9, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +462 days, USPTO patent term adjustment record | Jan 14, 2035 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 14, 2035 | High confidence |
This family
| US 9,723,946 | this patent Jan 2035 | Jan 2035 |
| US 10,820,737 | In force no later than Dec 2034 | no later than Dec 2034 |
| US 11,406,218 | In force Sep 2034 | Sep 2034 |
3 of 5 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 |
|---|---|---|---|
| Jul 24, 2014 Reel 33388, frame 538 | Chen, Andrew Yuen Chin; Cheng, Amy Decem; Wong, Raymond Wai Ming; Tay, Jeremy Kok Leong | Electrical and Electronics, Ltd. | Assignment of Assignor's Interest |
| May 26, 2016 Reel 38733, frame 243 | Electrical & Electronics Ltd. | Ene Holdings Ltd. | Assignment of Assignor's Interest |
| Jul 12, 2016 Reel 39321, frame 407 | CDRD Ventures Inc. | Zymeworks Inc. | Corrective Assignment to Correct the Assignee Previously Recorded on Reel 039068 Frame 0022. Assignor(S) Hereby Confirms the Asignment. |
| Jun 26, 2017 Reel 43017, frame 428 | Ene Holdings Ltd. | Ene Holdings Ltd. | Corrected by Declaration of Erroneously Assigned Filed Assignment - Reel/Frame: 039321/0407 |
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jan 2035
Term ends Jan 14, 2035. Maintenance fees still fall due before then
Note
The 462 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2017 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.