Also listed on Berg LLC, an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Apr 21, 2025 (Phoenix Genesis LLC).
Term ends Feb 9, 2031 · High confidence
20-year base term ends Mar 21, 2028
Held by Bpgbio, Inc.
Filed Mar 21, 2008 as application 12/052,825 · Granted Jun 4, 2013
Base term plus 1055 days of patent term adjustment (USPTO delay)
Today
2008
2031
Clock starts
Mar 21, 2008
Mar 21, 2008
Term ends
Feb 9, 2031
Feb 9, 2031
Granted
Jun 4, 2013
Jun 4, 2013
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
1,055
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.
4
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 1055 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 Mar 21, 2008, when this application, 12/052,825, was filed | Mar 21, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1055 days, USPTO patent term adjustment record | Feb 9, 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 | Feb 9, 2031 | High confidence |
This family
| US 8,454,945 | this patent Feb 2031 | Feb 2031 |
| US 10,588,859 | In force Mar 2028 | Mar 2028 |
| Application 16/785,814 | Abandoned not computed | not computed |
| Application 17/847,577 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Mar 21, 2008 Reel 20683, frame 568 | McCook, John Patrick; Persaud, Indushekhar; Narain, Niven Rajin | Pathfinder Management, Inc. | Assignment of Assignor's Interest |
| Jan 29, 2009 Reel 22170, frame 814 | Pathfinder Management, Inc. | Cytotech Labs, LLC | Assignment of Assignor's Interest |
| Jul 19, 2012 Reel 28590, frame 331 | Cytotech Labs, LLC | Berg Pharma LLC | Assignment of Assignor's Interest |
| Jul 9, 2015 Reel 36086, frame 755 | Berg Therapeutics, LLC | Berg Pharma LLC | Change of Name |
| Jul 9, 2015 Reel 36088, frame 567 | Cytotech Labs, LLC | Berg Therapeutics, LLC | Corrective Assignment to Correct the Nature of Conveyance and Supporting Documentation Previously Recorded on Reel 028590 Frame 0331. Assignor(S) Hereby Confirms the Change of Name. |
| Jul 9, 2015 Reel 36088, frame 571 | Berg Pharma LLC | Berg LLC | Change of Name |
| Jun 2, 2023 Reel 63842, frame 405 | Berg LLC | Bpgbio, Inc. | Assignment of Assignor's Interest |
| Apr 21, 2025 Reel 70903, frame 693 | Bpgbio Inc. | Phoenix Genesis LLC | Security Interest |
| Apr 30, 2025 Reel 71285, frame 1 | Bpgbio Inc. | Phoenix Genesis LLC | Corrective Assignment to Correct the Patent Number 8147825 Was Added Previously Recorded at Reel: 70903 Frame: 693. Assignor(S) Hereby Confirms the Security Agreement. |
| Aug 29, 2025 Reel 72805, frame 303 | Bpgbio Inc. | Berg Survivor’s Trust; Berg, Kara Ann; Thliveris, Andrew T. | Security Interest |
| Aug 29, 2025 reel/frame not recorded | Bpgbio Inc. | Berg Survivor’s Trust | Security Interest |
| Aug 29, 2025 reel/frame not recorded | Bpgbio Inc. | Berg, Kara Ann | Security Interest |
| Aug 29, 2025 reel/frame not recorded | Bpgbio Inc. | Thliveris, Andrew T. | 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
Feb 2031
Term ends Feb 9, 2031. No further fees fall due before then
Note
The 1055 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
160
later US patents cite this one
That is top 5% of utility patents granted in 2013 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.