Also listed on Viper Technologies LLC D B a Thortex Inc, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 1, 2035 · High confidence
20-year base term ends Oct 23, 2033
Held by Avalign Technologies, Inc.
Filed Jun 28, 2016 as application 15/195,624 · Granted Dec 15, 2020
Base term plus 739 days of patent term adjustment (USPTO delay)
Today
2013
2035
Clock starts
Oct 23, 2013
Oct 23, 2013
Term ends
Nov 1, 2035
Nov 1, 2035
Granted
Dec 15, 2020
Dec 15, 2020
base term
patent term adjustment
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
739
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.
5
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 739 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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 Oct 23, 2013, when application 14/061,466, the earliest non-provisional in its chain, was filed (this one was filed Jun 28, 2016) | Oct 23, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +739 days, USPTO patent term adjustment record | Nov 1, 2035 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 1, 2035 | High confidence |
This family
| US 9,404,173 | In force Aug 2034 | Aug 2034 |
| US 10,865,468 | this patent Nov 2035 | Nov 2035 |
| Application PCT/US2017/039761 | PCT application no patent term | no patent term |
| Application 16/953,761 | Abandoned not computed | not computed |
| Application PCT/US2021/060081 | 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 |
|---|---|---|---|
| Jun 29, 2017 Reel 42863, frame 884 | Estate of David Walker | David and Kathy Walker Family Trust U/T/A DTD 9/17/10 | Assignment of Assignor's Interest |
| Jun 29, 2017 Reel 42863, frame 941 | David and Kathy Walker Family Trust U/T/A/ DTD 9/17/10 | Viper Technologies LLC | Assignment of Assignor's Interest |
| Jun 29, 2017 Reel 42863, frame 994 | Walker, Kathy | Viper Technologies LLC | Assignment of Assignor's Interest |
| Jul 14, 2017 Reel 43004, frame 820 | Viper Technologies, LLC | Societe Generale, as the Collateral Agent | Security Interest |
| Dec 21, 2018 Reel 47845, frame 475 | Nemcomed, Inc.; Viper Technologies LLC; Avalign Technologies Inc.; Advantis Medical Inc. | U.S. Bank National Association | Security Interest |
| Dec 21, 2018 Reel 47975, frame 246 | Nemcomed, Inc.; Viper Technologies, LLC; Avalign Technologies, Inc.; Advantis Medical, Inc. | Keybank National Association | First Lien Intellectual Property Security Agreement |
| Dec 21, 2018 Reel 47977, frame 84 | Société Générale, as Collateral Agent | Viper Technologies, LLC | Release of First Lien Security Interest in Patents |
| Dec 21, 2018 Reel 47978, frame 647 | Société Générale, as Collateral Agent | Viper Technologies, LLC | Release of Second Lien Security Interest in Patents |
| Nov 19, 2020 Reel 54413, frame 286 | Viper Technologies, LLC | Avalign Technologies, Inc. | Assignment of Assignor's Interest |
| Dec 14, 2022 Reel 62096, frame 869 | Viper Technologies, LLC; Avalign Technologies, Inc. | Crescent Agency Services LLC | Security Interest |
| Dec 15, 2022 Reel 62101, frame 412 | Avalign Technologies, Inc. | Keybank National Association | Security Interest |
| Mar 4, 2024 Reel 66636, frame 769 | Viper Technologies LLC; Avalign Technologies, Inc. | Crescent Agency Services, LLC | Security Interest |
| Mar 4, 2024 Reel 66637, frame 114 | Crescent Agency Services, LLC | Avalign Technologies, Inc.; Viper Technologies, LLC | Release of Security Interest |
| Mar 4, 2024 Reel 66637, frame 728 | U.S. Bank National Association | Avalign Technologies, Inc.; Viper Technologies, LLC; Nemcomed, Inc.; Advantis Medical, Inc. | Release of Security Interest |
| Mar 4, 2024 reel/frame not recorded | Crescent Agency Services, LLC | Avalign Technologies, Inc. | Release of Security Interest |
| Mar 4, 2024 reel/frame not recorded | Crescent Agency Services, LLC | Viper Technologies, LLC | Release of Security Interest |
| Mar 4, 2024 reel/frame not recorded | U.S. Bank National Association | Avalign Technologies, Inc. | Release of Security Interest |
| Mar 4, 2024 reel/frame not recorded | U.S. Bank National Association | Viper Technologies, LLC | Release of Security Interest |
| Mar 4, 2024 reel/frame not recorded | U.S. Bank National Association | Nemcomed, Inc. | Release of Security Interest |
| Mar 4, 2024 reel/frame not recorded | U.S. Bank National Association | Advantis Medical, Inc. | Release of Security Interest |
| Mar 5, 2024 Reel 66654, frame 713 | Keybank National Association, As Collateral Agent | Avalign Technologies Inc.; Nemcomed, Inc.; Viper Technologies, LLC; Advantis Medical, Inc. | Release of Security Interest |
| Mar 5, 2024 reel/frame not recorded | Keybank National Association, As Collateral Agent | Avalign Technologies Inc. | Release of Security Interest |
| Mar 5, 2024 reel/frame not recorded | Keybank National Association, As Collateral Agent | Nemcomed, Inc. | Release of Security Interest |
| Mar 5, 2024 reel/frame not recorded | Keybank National Association, As Collateral Agent | Viper Technologies, LLC | Release of Security Interest |
| Mar 5, 2024 reel/frame not recorded | Keybank National Association, As Collateral Agent | Advantis Medical, 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 2035
Term ends Nov 1, 2035. Maintenance fees still fall due before then
Note
The 739 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2020 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.