Term ended May 11, 2021 · Medium confidence
20-year base term ended May 11, 2021
Why Medium: A parent in the chain could not be resolved.
USPTO later recorded it as expired for non-payment on Feb 7, 2022.
Filed Apr 20, 2012 as application 13/452,074 · Granted Dec 31, 2013
Base term, 20 years from filing
Today
Term ended May 11, 2021
2001
2026
Clock starts
May 11, 2001
May 11, 2001
Term ended
May 11, 2021
May 11, 2021
Granted
Dec 31, 2013
Dec 31, 2013
base term
after the term ends
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,185,413, to May 11, 2021. The term already ends on or before that date, so the cap shortened nothing.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it 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 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. 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 May 11, 2001, when application 09/853,206, the earliest non-provisional in its chain, was filed (this one was filed Apr 20, 2012); a parent in its chain could not be resolved (the next row) | May 11, 2021 | 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 | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,185,413) | resolves to May 11, 2021, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Feb 7, 2022, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | May 11, 2021 | Medium confidence |
This family
| US 8,099,295 | In force May 2028 | May 2028 |
| US 8,185,413 | Term ended Sep 2022 | Sep 2022 |
| US 8,620,830 | this patent May 2021 | May 2021 |
3 of 4 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 |
|---|---|---|---|
| May 1, 2012 Reel 28133, frame 154 | Rey-giraud, Agnes; Melnick, Steve | Express Scripts, Inc. | Assignment of Assignor's Interest |
| Sep 14, 2017 Reel 43864, frame 335 | Express Scripts, Inc. | Express Scripts Strategic Development, 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,185,413, ends no earlier than this term, so it caps nothing.
Citations
17
later US patents cite this one
That is above the median 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.