Collateral for a security interest recorded May 2, 2016 (Opus Bank).
Term ends Nov 20, 2029 · High confidence
20-year base term ends Nov 20, 2029
Held by Drum Workshop, Inc.
Filed Jan 19, 2010 as application 12/657,180 · Granted Mar 27, 2012
Base term, 20 years from filing
Today
2009
2029
Clock starts
Nov 20, 2009
Nov 20, 2009
Term ends
Nov 20, 2029
Nov 20, 2029
Granted
Mar 27, 2012
Mar 27, 2012
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Nov 20, 2009, when application 12/592,208, the earliest non-provisional in its chain, was filed (this one was filed Jan 19, 2010) | Nov 20, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 20, 2029 | High confidence |
This family
| US 7,902,444 | In force Nov 2029 | Nov 2029 |
| US 8,143,507 | this patent Nov 2029 | Nov 2029 |
| Application PCT/US2010/000853 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Jan 19, 2010 Reel 23842, frame 485 | Good, John J.; Sikra, Richard A. | Drum Workshop, Inc. | Assignment of Assignor's Interest |
| Mar 11, 2015 Reel 35187, frame 365 | Drum Workshop, Inc. | Bank Of America, N.a. | Security Interest |
| Dec 2, 2015 Reel 37195, frame 605 | Drum Workshop, Inc. (as Grantor) | Endeavour Structured Equity and Mezzanine Fund I, L.P. (as Lead Purchaser) | Security Interest |
| Apr 26, 2016 Reel 38527, frame 968 | Endeavour Structured Equity and Mezzanine Fund I, L.P. | Drum Workshop, Inc. | Release of Security Interest |
| May 2, 2016 Reel 38589, frame 666 | Drum Workshop, Inc. | Opus Bank | Security Interest |
| May 5, 2017 Reel 42409, frame 38 | Bank Of America, N.a. | Drum Workshop, Inc. | Release of Security 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
Nov 2029
Term ends Nov 20, 2029. No further fees fall due before then
Citations
10
later US patents cite this one
That is above the median of utility patents granted in 2012 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.