Collateral for a security interest recorded Aug 27, 2025 (Ares Capital Corporation).
Term ends Dec 14, 2031 · High confidence
20-year base term ends Nov 7, 2031
Filed Aug 20, 2013 as application 13/971,445 · Granted Feb 10, 2015
Base term plus 37 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Nov 7, 2011
Nov 7, 2011
Term ends
Dec 14, 2031
Dec 14, 2031
Granted
Feb 10, 2015
Feb 10, 2015
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
37
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.
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 37 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 Nov 7, 2011, when applications 13/290,731 and 13/290,746, the earliest non-provisional applications in its chain, were filed (this one was filed Aug 20, 2013) | Nov 7, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +37 days, USPTO patent term adjustment record | Dec 14, 2031 | 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 | Dec 14, 2031 | High confidence |
This family
| US 8,639,930 | In force (reinstated) Dec 2032 | Dec 2032 |
| US 8,856,956 | In force Aug 2033 | Aug 2033 |
| US 8,955,154 | this patent Dec 2031 | Dec 2031 |
| US 8,732,803 | In force Nov 2031 | Nov 2031 |
| US 10,210,539 | In force Nov 2031 | Nov 2031 |
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 |
|---|---|---|---|
| Aug 20, 2013 Reel 31046, frame 494 | Stibel, Jeffrey M.; Buechler, Chad Michael; Landgraf, Raymond; Delgrosso, Peter; Stibel, Aaron B. | Credibility Corp. | Assignment of Assignor's Interest |
| Jun 4, 2014 Reel 33084, frame 745 | Credibility Corp. | Bank of America, N.A., as Lender | Notice of Grant of Security Interest in Patents |
| May 12, 2015 Reel 35650, frame 432 | Bank Of America, N.a. | Credibility Corp. | Release of Security Interest |
| Nov 19, 2015 Reel 37086, frame 888 | Brad Acquisition Corp.; Credibility Corp.; Credibility Corp. | Dun & Bradstreet Emerging Businesses Corp. | Merger and Change of Name |
| Feb 12, 2019 Reel 48306, frame 375 | The Dun & Bradstreet Corporation; Dun & Bradstreet Emerging Businesses Corp.; Dun & Bradstreet, Inc.; Hoover's, Inc. | Wilmington Trust, National Association, as Collateral Agent | Patent Security Agreement |
| Feb 12, 2019 Reel 48306, frame 412 | The Dun & Bradstreet Corporation; Dun & Bradstreet Emerging Businesses Corp.; Dun & Bradstreet, Inc.; Hoover's Inc. | Bank of America, N.A., as Administrative Agent | Patent Security Agreement |
| Jan 18, 2022 Reel 58757, frame 232 | Wilmington Trust, National Association, as Collateral Agent | The Dun & Bradstreet Corporation; Dun & Bradstreet Emerging Businesses Corp.; Dun & Bradstreet, Inc.; Hoover's, Inc. | Intellectual Property Release and Termination |
| Jan 18, 2022 reel/frame not recorded | Wilmington Trust, National Association, as Collateral Agent | The Dun & Bradstreet Corporation | Intellectual Property Release and Termination |
| Jan 18, 2022 reel/frame not recorded | Wilmington Trust, National Association, as Collateral Agent | Dun & Bradstreet Emerging Businesses Corp. | Intellectual Property Release and Termination |
| Jan 18, 2022 reel/frame not recorded | Wilmington Trust, National Association, as Collateral Agent | Dun & Bradstreet, Inc. | Intellectual Property Release and Termination |
| Jan 18, 2022 reel/frame not recorded | Wilmington Trust, National Association, as Collateral Agent | Hoover's, Inc. | Intellectual Property Release and Termination |
| Aug 27, 2025 Reel 72591, frame 843 | Bank Of America, N.a. As Agent | The Dun & Bradstreet Corporation; Dun & Bradstreet Emerging Businesses Corp.; Dun & Bradstreet, Inc.; Hoover’s, Inc.; Lattice Engines, Inc. | Release of Security Interest |
| Aug 27, 2025 Reel 72643, frame 196 | Dun & Bradstreet Emerging Businesses Corp.; Dun & Bradstreet, Inc.; Lattice Engines, Inc.; The Dun and Bradstreet Corporation | Ares Capital Corporation, As Collateral Agent | Security Interest |
| Aug 27, 2025 reel/frame not recorded | Bank Of America, N.a. As Agent | The Dun & Bradstreet Corporation | Release of Security Interest |
| Aug 27, 2025 reel/frame not recorded | Bank Of America, N.a. As Agent | Dun & Bradstreet Emerging Businesses Corp. | Release of Security Interest |
| Aug 27, 2025 reel/frame not recorded | Bank Of America, N.a. As Agent | Dun & Bradstreet, Inc. | Release of Security Interest |
| Aug 27, 2025 reel/frame not recorded | Bank Of America, N.a. As Agent | Hoover’s, Inc. | Release of Security Interest |
| Aug 27, 2025 reel/frame not recorded | Bank Of America, N.a. As Agent | Lattice Engines, 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
Dec 2031
Term ends Dec 14, 2031. No further fees fall due before then
Note
The 37 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
46
later US patents cite this one
That is top 10% of utility patents granted in 2015 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.