Term ends Feb 23, 2031 · High confidence
20-year base term ends Feb 23, 2031
Held by PerkinElmer U.S. LLC
Filed Feb 23, 2011 as application 13/033,256 · Granted Aug 11, 2015
Base term, 20 years from filing
Today
2011
2031
Clock starts
Feb 23, 2011
Feb 23, 2011
Term ends
Feb 23, 2031
Feb 23, 2031
Granted
Aug 11, 2015
Aug 11, 2015
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
2 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 is its 20-year base term, with no adjustment for prosecution delay. 2 of 3 maintenance fees are 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 Feb 23, 2011, when this application, 13/033,256, was filed | Feb 23, 2031 | 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 | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 23, 2031 | 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 |
|---|---|---|---|
| Jun 26, 2015 Reel 35967, frame 122 | DH Technologies Development Pte. Ltd. | PerkinElmer Health Sciences, Inc. | Assignment of Assignor's Interest |
| Jul 2, 2015 Reel 35970, frame 422 | Badiei, Hamid; Bandura, Dmitry; Baranov, Vladimir; Kahen, Kaveh; Tanner, Scott | DH Technologies Development Pte. Ltd. | Assignment of Assignor's Interest |
| Mar 13, 2023 Reel 66839, frame 109 | PerkinElmer U.S. LLC | Owl Rock Capital Corporation | Security Interest |
| Mar 28, 2023 Reel 63170, frame 26 | PerkinElmer Health Sciences Inc. | PerkinElmer U.S. LLC | Assignment of Assignor's 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
Feb 2031
Term ends Feb 23, 2031. Maintenance fees still fall due before then
Citations
9
later US patents cite this one
That is above the median 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.