Term ended Oct 27, 2026 · Medium confidence
20-year base term ended May 24, 2025
Why Medium: A parent in the chain could not be resolved.
Held by Tobii AB
Filed Aug 6, 2013 as application 13/960,361 · Granted Jun 12, 2018
Base term plus 521 days of patent term adjustment (USPTO delay)
Today
Term ended Oct 27, 2026
2005
2026
Clock starts
May 24, 2005
May 24, 2005
Term ended
Oct 27, 2026
Oct 27, 2026
Granted
Jun 12, 2018
Jun 12, 2018
base term
patent term adjustment
after the term ends
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
521
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 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.
6
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 521 days past its 20-year base term on 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 May 24, 2005, when application PCT/SE2005/000775, the earliest non-provisional in its chain, was filed (this one was filed Aug 6, 2013); a parent in its chain could not be resolved (the next row) | May 24, 2025 | 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 | +521 days, USPTO patent term adjustment record | Oct 27, 2026 | 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 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Oct 27, 2026 | Medium confidence |
This family
| US 9,996,159 | this patent Oct 2026 | Oct 2026 |
| US 9,952,672 | In force Mar 2027 | Mar 2027 |
| US 10,203,758 | Term ended Jun 2026 | Jun 2026 |
3 of 6 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 |
|---|---|---|---|
| Apr 8, 2015 Reel 35388, frame 821 | Tobii Technology AB | Tobii AB | Change of Name |
| May 29, 2024 Reel 67545, frame 639 | Björklund, Christoffer; Eskilsson, Henrik; Jacobson, Magnus; Skogö, Mårten | Tobii Technology AB | 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.
What's changing
Note
The 521 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
30
later US patents cite this one
That is top 10% of utility patents granted in 2018 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.