Collateral for a security interest recorded Jul 14, 2017 (Societe Generale, as the Collateral Agent).
Term ends Aug 6, 2030 · High confidence
20-year base term ends Sep 8, 2029
Filed Sep 8, 2009 as application 12/555,440 · Granted Feb 28, 2012
Base term plus 332 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
Sep 8, 2009
Sep 8, 2009
Term ends
Aug 6, 2030
Aug 6, 2030
Granted
Feb 28, 2012
Feb 28, 2012
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
332
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
This patent's term runs 332 days past its 20-year base term on 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 Sep 8, 2009, when this application, 12/555,440, was filed | Sep 8, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +332 days, USPTO patent term adjustment record | Aug 6, 2030 | 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 | Aug 6, 2030 | 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 |
|---|---|---|---|
| Sep 11, 2009 Reel 23217, frame 711 | Su, Cheyenne Xiaoyan; Walker, David | Viper Technologies, D.B.A. Thortex Inc., 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 |
| Dec 14, 2022 Reel 62096, frame 869 | Viper Technologies, LLC; Avalign Technologies, Inc. | Crescent Agency Services LLC | 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
Aug 2030
Term ends Aug 6, 2030. No further fees fall due before then
Note
The 332 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
5
later US patents cite this one
That is below 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.