Lapsed Oct 16, 2026 on the fee record · Low confidence
20-year base term ends Mar 16, 2032
Second maintenance fee unpaid; grace period ended. The USPTO has not yet posted the lapse.
Held by Tesa SE
Filed Mar 16, 2012 as application 13/421,937 · Granted Oct 16, 2018
Base term, 20 years from filing, plus 542 days of patent term adjustment (USPTO delay)
Today
Lapsed Oct 16, 2026
2012
2033
Clock starts
Mar 16, 2012
Mar 16, 2012
No longer in force
Oct 16, 2026
Oct 16, 2026
Granted
Oct 16, 2018
Oct 16, 2018
Term would have run to
Sep 9, 2033
Sep 9, 2033
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
542
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
Its term would have run to Sep 9, 2033: its 20-year base term plus 542 days of term adjustment for prosecution delay. Confidence: Low. 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 Mar 16, 2012, when this application, 13/421,937, was filed | Mar 16, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +542 days, USPTO patent term adjustment record | Sep 9, 2033 | 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 | No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case" | lapsed Oct 16, 2026 | Low confidence |
| Computed term end | The steps above, in order | Oct 16, 2026 | Low confidence |
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 |
|---|---|---|---|
| May 23, 2012 Reel 28253, frame 341 | Siebert, Michael; Seitzer, Dennis | Tesa SE | Assignment of Assignor's Interest |
| Dec 17, 2015 Reel 37317, frame 675 | Tesa SE | Tesa SE | Change of Address |
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
Note
The 542 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
10
later US patents cite this one
That is above the median 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.