Term ended Oct 21, 2020 · Medium confidence
20-year base term ended Mar 12, 2018
Why Medium: A parent in the chain could not be resolved.
USPTO later recorded it as expired for non-payment on Apr 24, 2023.
Held by Immunomedics, Inc.
Filed Oct 1, 2001 as application 09/965,796 · Granted Mar 22, 2011
Base term plus 954 days of patent term adjustment (USPTO delay)
Today
Term ended Oct 21, 2020
1998
2026
Clock starts
Mar 12, 1998
Mar 12, 1998
Term ended
Oct 21, 2020
Oct 21, 2020
Granted
Mar 22, 2011
Mar 22, 2011
base term
patent term adjustment
after the term ends
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
954
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
331
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 954 days past its 20-year base term on prosecution delay. Confidence: Medium. 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 12, 1998, when application 09/038,955, the earliest non-provisional in its chain, was filed (this one was filed Oct 1, 2001); a parent in its chain could not be resolved (the next row) | Mar 12, 2018 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +954 days, USPTO patent term adjustment record | Oct 21, 2020 | 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 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Apr 24, 2023, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | Oct 21, 2020 | Medium confidence |
This family
| Application 09/921,290 | Abandoned not computed | not computed |
| US 7,910,103 | this patent Oct 2020 | Oct 2020 |
| Application 10/350,096 | Abandoned not computed | not computed |
| US 7,312,318 | Term ended Jun 2024 | Jun 2024 |
| US 7,238,785 | Lapsed on the fee record Jul 2019 | Jul 2019 |
| US 7,282,567 | Lapsed on the fee record Oct 2019 | Oct 2019 |
| US 7,829,064 | Term ended May 2021 | May 2021 |
| US 7,585,491 | Term ended Jul 2024 | Jul 2024 |
8 of 331 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 |
|---|---|---|---|
| Jan 15, 2020 Reel 51522, frame 909 | Goldenberg, David M. | Immunomedics, Inc. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 954 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
82
later US patents cite this one
That is top 10% of utility patents granted in 2011 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.