Term ends no later than Jan 29, 2029 · Medium confidence
20-year base term ends Jan 29, 2029
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by CRG Servicing LLC,
Filed Apr 5, 2013 as application 13/857,960 · Granted Sep 30, 2014
Base term, 20 years from filing
Today
2009
2029
Clock starts
Jan 29, 2009
Jan 29, 2009
Ends no later than
Jan 29, 2029
Jan 29, 2029
Granted
Sep 30, 2014
Sep 30, 2014
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
9
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. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 29, 2009, when application 12/362,244, the earliest non-provisional in its chain, was filed (this one was filed Apr 5, 2013) | Jan 29, 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 | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Jan 29, 2029 | Medium confidence |
This family
| US 8,255,057 | In force no later than May 2030 | no later than May 2030 |
| US 8,509,906 | In force Jan 2029 | Jan 2029 |
| US 8,849,410 | this patent no later than Jan 2029 | no later than Jan 2029 |
| US 9,403,013 | In force no later than Jan 2029 | no later than Jan 2029 |
| US 10,173,065 | In force Jan 2029 | Jan 2029 |
| US 10,179,241 | In force Jan 2029 | Jan 2029 |
| US 10,918,867 | In force May 2029 | May 2029 |
| US 11,883,670 | In force no later than Oct 2029 | no later than Oct 2029 |
8 of 9 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 |
|---|---|---|---|
| Dec 18, 2013 Reel 31812, frame 415 | Fang, Zi-ping; Caparso, Anthony V.; Walker, Andre B. | Nevro Corporation | Assignment of Assignor's Interest |
| Dec 12, 2014 Reel 34619, frame 546 | Nevro Corp. | Capital Royalty Partners II L.P.; Capital Royalty Partners II - Parallel Fund "a" L.P.; Parallel Investment Opportunities Partners II L.P. | Security Interest |
| Dec 12, 2014 reel/frame not recorded | Nevro Corp. | Capital Royalty Partners II L.P. | Security Interest |
| Dec 12, 2014 reel/frame not recorded | Nevro Corp. | Capital Royalty Partners II - Parallel Fund "a" L.P. | Security Interest |
| Dec 12, 2014 reel/frame not recorded | Nevro Corp. | Parallel Investment Opportunities Partners II L.P. | Security Interest |
| Jun 13, 2016 Reel 38984, frame 865 | Capital Royalty Partners II L.P.; Capital Royalty Partners II - Parallel Fund "a" L.P.; Parallel Investment Opportunities Partners II L.P. | CRG Servicing LLC, | Assignment Agreement (REAFFIRMATION) |
| Jun 27, 2016 Reel 39168, frame 890 | CRG Servicing LLC | Nevro Corp. | Release of Security Interest |
| Nov 16, 2016 Reel 41256, frame 947 | Fang, Zi-ping; Caparso, Anthony V.; Walker, Andre B. | Nevro Corp. | Corrective Assignment to Correct the Receiving Party Data Name Previously Recorded on Reel 031812 Frame 0415. Assignor(S) Hereby Confirms the Receiving Party Data Name Is Nevro Corp. |
| Dec 1, 2023 Reel 65744, frame 302 | Nevro Corp. | Wilmington Trust, National Association, as Agent | Patent Security Agreement |
| Apr 4, 2025 Reel 70743, frame 1 | Wilmington Trust, National Association, as Agent | Nevro Corp. | 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
Jan 2029
Term ends no later than Jan 29, 2029. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jan 29, 2029. We will not guess the cap.
Citations
39
later US patents cite this one
That is top 25% of utility patents granted in 2014 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.