Surrendered on reissue Jun 27, 2023 · Medium confidence
20-year base term ends Jun 5, 2035
Why Medium: A parent in the chain could not be resolved.
Surrendered on reissue Jun 27, 2023 · its term and maintenance fees continue in US RE49,559 and US RE50,217.
Held by JT International S.A.
Filed Jan 9, 2019 as application 16/243,871 · Granted Oct 22, 2019
Base term, 20 years from filing
Today
Surrendered Jun 27, 2023
2015
2035
Clock starts
Jun 5, 2015
Jun 5, 2015
No longer in force
Jun 27, 2023
Jun 27, 2023
Granted
Oct 22, 2019
Oct 22, 2019
Term would have run to
Jun 5, 2035
Jun 5, 2035
base term
after the term ends
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.
None
Terminal disclaimer
No disclaimer on this record.
1 of 3
Maintenance fees paid
Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.
12
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. 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, 20 years from filing | Clock starts Jun 5, 2015, when application PCT/GB2015/051646, the earliest non-provisional in its chain, was filed (this one was filed Jan 9, 2019); a parent in its chain could not be resolved (the next row) | Jun 5, 2035 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | 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 | 1 of 3 maintenance fees paid | no change | High confidence |
| Reissue | US RE49,559 and US RE50,217 issued Jun 27, 2023, and this patent's term continues in it (35 U.S.C. 251, 252) | surrendered Jun 27, 2023 | High confidence |
| Surrendered on reissue | The steps above, in order | Jun 27, 2023 | Medium confidence |
This family
| US 10,219,543 | In force Jun 2035 | Jun 2035 |
| US 10,856,575 | In force Dec 2035 | Dec 2035 |
| US 10,448,673 | this patent Jun 2023 | Jun 2023 |
| US 10,674,772 | In force Jun 2035 | Jun 2035 |
| US 11,744,292 | In force Sep 2036 | Sep 2036 |
| US 11,758,947 | In force Jun 2036 | Jun 2036 |
| Application 17/507,513 | Pending not computed | not computed |
| Application 18/205,316 | Abandoned not computed | not computed |
8 of 12 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 |
|---|---|---|---|
| Sep 9, 2019 Reel 50314, frame 221 | Gill, Mark; Vanko, Daniel; Brvenik, Lubos | Relco Induction Developments Limited | Assignment of Assignor's Interest |
| Sep 9, 2019 Reel 50314, frame 370 | Relco Induction Developments Limited | JT International Ep Developments Limited | Change of Name |
| Sep 9, 2019 Reel 50314, frame 421 | JT International Ep Developments Limited | JT International S.A. | 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.
Citations
11
later US patents cite this one
That is top 25% of utility patents granted in 2019 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.