Also listed on K'Nex Limited Partnership Group, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 26, 2033 · High confidence
20-year base term ends Nov 26, 2033
Held by K'Nex Brands Holding, LLC
Filed Nov 26, 2013 as application 14/090,613 · Granted May 16, 2017
Base term, 20 years from filing
Today
2013
2033
Clock starts
Nov 26, 2013
Nov 26, 2013
Term ends
Nov 26, 2033
Nov 26, 2033
Granted
May 16, 2017
May 16, 2017
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.
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.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. 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 Nov 26, 2013, when this application, 14/090,613, was filed | Nov 26, 2033 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 26, 2033 | High 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 |
|---|---|---|---|
| Jan 10, 2014 Reel 31941, frame 833 | Strand, Lavonne | K'Nex Limited Partnership Group | Assignment of Assignor's Interest |
| May 20, 2016 Reel 38765, frame 213 | K'Nex Limited Partnership Group | Pnc Bank, National Association | Security Interest |
| Feb 8, 2018 Reel 45298, frame 237 | Pnc Bank, National Association | K'Nex Limited Partnership Group | Release of Security Interest |
| Feb 8, 2018 Reel 45298, frame 254 | K'Nex Limited Partnership Group | Basic Fun, Inc. | Assignment of Assignor's Interest |
| Feb 15, 2018 Reel 45349, frame 130 | Basic Fun, Inc. | Royal Bank of Canada | Security Interest |
| Oct 30, 2020 Reel 54263, frame 388 | Basic Fun, Inc.; TGS Acquisition LLC; Tbdum, LLC | Crystal Financial LLC, as Administrative Agent | Grant of Security Interest in Patents |
| Nov 12, 2020 Reel 54402, frame 148 | Royal Bank of Canada | Basic Fun Inc. | Release of Security Interest |
| Feb 13, 2021 Reel 55301, frame 240 | Basic Fun, Inc. | Royal Bank of Canada | Security Interest |
| Jul 5, 2024 Reel 68133, frame 317 | Basic Fun, Inc.; Tbdum, LLC | Great Rock Capital Partners Management, LLC | Security Interest |
| Jul 11, 2024 Reel 68283, frame 978 | Crystal Financial, LLC | Basic Fun, Inc.; Tbdum, LLC; TGS Acquisition LLC | Release of Security Interest |
| Jul 11, 2024 reel/frame not recorded | Crystal Financial, LLC | Basic Fun, Inc. | Release of Security Interest |
| Jul 11, 2024 reel/frame not recorded | Crystal Financial, LLC | Tbdum, LLC | Release of Security Interest |
| Jul 11, 2024 reel/frame not recorded | Crystal Financial, LLC | TGS Acquisition LLC | Release of Security Interest |
| Oct 31, 2024 Reel 69288, frame 516 | Basic Fun, Inc.; Tbdum, LLC | Great Rock Capital Partners Management, LLC, as Agent | Security Interest |
| May 20, 2026 Reel 74702, frame 46 | Royal Bank of Canada | Basic Fun, Inc. | Release of Security Interest |
| May 20, 2026 Reel 74702, frame 62 | Great Rock Capital Partners Management, LLC | Basic Fun, Inc. | Release of Security Interest |
| May 20, 2026 Reel 75601, frame 480 | Basic Fun, Inc. | Sterling Drive Ventures, L.p. | Assignment of Assignor's Interest |
| May 20, 2026 Reel 75601, frame 515 | Sterling Drive Ventures, L.p. | K'Nex Brands Holding, LLC | Assignment of Assignor's Interest |
| Sep 2, 2026 reel/frame not recorded | Great Rock Capital Partners Management, LLC, as Agent | Basic Fun, Inc. | Release of Security Interest |
| Sep 2, 2026 reel/frame not recorded | Great Rock Capital Partners Management, LLC, as Agent | Tbdum, LLC | Release of Security Interest |
| Sep 2, 2026 Reel 76340, frame 358 | Great Rock Capital Partners Management, LLC, as Agent | Basic Fun, Inc.; Tbdum, LLC | 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.
What's changing
Nov 2033
Term ends Nov 26, 2033. Maintenance fees still fall due before then
Citations
1
later US patent cites this one
That is below 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.