Term ends Jan 25, 2028 · High confidence
20-year base term ends Jan 25, 2028
Held by Isoplexis Corporation
Filed Feb 12, 2010 as application 12/704,842 · Granted Jan 27, 2015
Base term, 20 years from filing
Today
2008
2028
Clock starts
Jan 25, 2008
Jan 25, 2008
Term ends
Jan 25, 2028
Jan 25, 2028
Granted
Jan 27, 2015
Jan 27, 2015
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,481,259, to Jan 25, 2028. The term already ends on or before that date, so the cap shortened nothing.
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.
31
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 resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Jan 25, 2008, when application 12/020,284, the earliest non-provisional in its chain, was filed (this one was filed Feb 12, 2010) | Jan 25, 2028 | 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 resolved from the filed document (refs US 8,481,259) | resolves to Jan 25, 2028, no earlier than this term, so no change | 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 | Jan 25, 2028 | High confidence |
This family
| Application 12/020,284 | Abandoned not computed | not computed |
| US 8,612,161 | In force Jul 2030 | Jul 2030 |
| Application 12/405,779 | Abandoned not computed | not computed |
| US 8,940,481 | this patent Jan 2028 | Jan 2028 |
| US 8,481,259 | In force Nov 2028 | Nov 2028 |
| US 9,017,973 | In force Mar 2029 | Mar 2029 |
| US 8,900,810 | In force Jan 2028 | Jan 2028 |
| US 9,879,309 | In force Oct 2030 | Oct 2030 |
8 of 31 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 |
|---|---|---|---|
| Mar 23, 2010 Reel 24125, frame 763 | Gordon, Steven; Auger, Steven; Schinazi, Alan | Intelligent Bio-Systems, Inc. | Assignment of Assignor's Interest |
| May 17, 2018 Reel 47132, frame 861 | Intelligent Bio-Systems, Inc. | Qiagen Waltham, Inc. | Change of Name |
| Nov 8, 2018 Reel 47923, frame 815 | Qiagen Waltham, Inc. | Qiagen Sciences, LLC | Merger |
| Jul 7, 2022 Reel 60614, frame 455 | Qiagen Sciences, LLC | Isoplexis Corporation | Amended Patent Purchase Agreement |
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 2028
Term ends Jan 25, 2028. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,481,259, ends no earlier than this term, so it caps nothing.
Citations
21
later US patents cite this one
That is top 25% 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.