Term ends Oct 25, 2029 · High confidence
20-year base term ends Aug 18, 2029
Held by TDK Electronics AG
Filed Jul 21, 2014 as application 14/336,008 · Granted Jun 6, 2017
Base term plus 181 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2009
2029
Clock starts
Aug 18, 2009
Aug 18, 2009
Term ends
Oct 25, 2029
Oct 25, 2029
Granted
Jun 6, 2017
Jun 6, 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
181
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 8,390,594, US 8,878,806.
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.
3
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 181 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Aug 18, 2009, when application 12/542,795, the earliest non-provisional in its chain, was filed (this one was filed Jul 21, 2014) | Aug 18, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +181 days, USPTO patent term adjustment record | Feb 15, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,390,594, US 8,878,806) | capped to Oct 25, 2029 | 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 | Oct 25, 2029 | High confidence |
This family
| US 8,390,594 | In force Jun 2031 | Jun 2031 |
| US 8,878,806 | Grace period ended Oct 2029 | Oct 2029 |
| US 9,671,865 | this patent Oct 2029 | Oct 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 |
|---|---|---|---|
| Jul 21, 2014 Reel 33349, frame 324 | Modarres, Ali; Cruz-hernandez, Juan Manuel; Grant, Danny A.; Ramstein, Christophe | Immersion Corporation | Assignment of Assignor's Interest |
| Dec 22, 2020 Reel 54827, frame 736 | Immersion Corporation | TDK Electronics AG | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Oct 2029
Term ends Oct 25, 2029. Maintenance fees still fall due before then
Note
The 181 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 8,390,594, US 8,878,806.
Citations
12
later US patents cite this one
That is above 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.