Term ends Nov 28, 2026 · High confidence
20-year base term ended Oct 4, 2026
Held by Dexcom, Inc.
Filed Nov 7, 2008 as application 12/267,547 · Granted Oct 30, 2012
Base term plus 951 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2006
2026
Clock starts
Oct 4, 2006
Oct 4, 2006
Term ends
Nov 28, 2026
Nov 28, 2026
Granted
Oct 30, 2012
Oct 30, 2012
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
951
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,775,975, US 8,449,464.
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.
631
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 951 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Oct 4, 2006, when applications 11/543,396, 11/543,404 and 11/543,490, the earliest non-provisional applications in its chain, were filed (this one was filed Nov 7, 2008) | Oct 4, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +951 days, USPTO patent term adjustment record | May 12, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,775,975, US 8,449,464) | capped to Nov 28, 2026 | 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 | Nov 28, 2026 | High confidence |
This family
| US 6,862,465 | Term ended no later than Jul 2018 | no later than Jul 2018 |
| US 7,226,978 | Term ended no later than May 2022 | no later than May 2022 |
| Application PCT/US2003/015816 | PCT application no patent term | no patent term |
| US 7,778,680 | In force Oct 2027 | Oct 2027 |
| US 8,060,173 | In force May 2028 | May 2028 |
| US 6,931,327 | Term ended Sep 2023 | Sep 2023 |
| US 7,276,029 | Term ended Feb 2025 | Feb 2025 |
| US 7,192,450 | Term ended Jul 2021 | Jul 2021 |
8 of 631 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 27, 2009 Reel 22185, frame 968 | Simpson, Peter C.; Estes, Michael J.; Neale, Paul V.; Boock, Robert; Leach, Jacob S.; Yang, Richard C. | Dexcom, Inc. | Assignment of Assignor's Interest |
| Sep 4, 2012 Reel 28895, frame 95 | Brister, Mark | Dexcom, 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Nov 2026
Term ends Nov 28, 2026. No further fees fall due before then
Note
The 951 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 7,775,975, US 8,449,464.
Citations
912
later US patents cite this one
That is top 1% of utility patents granted in 2012 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.