Lapsed Aug 26, 2022 on the fee record · Low confidence
20-year base term ends Sep 12, 2028
Second maintenance fee unpaid; grace period ended.
Reissue of US 8,818,481, which was surrendered when this reissue was granted; its term and maintenance fees continue here.
Held by Medtronic Monitoring, Inc.
Filed Aug 25, 2016 as application 15/247,458 · Granted Jul 3, 2018
Base term, 20 years from filing
Today
Lapsed Aug 26, 2022
2008
2028
Clock starts
Sep 12, 2008
Sep 12, 2008
No longer in force
Aug 26, 2022
Aug 26, 2022
Granted
Jul 3, 2018
Jul 3, 2018
Term would have run to
Sep 12, 2028
Sep 12, 2028
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.
None
Terminal disclaimer
No disclaimer on this record.
1 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from the original patent's grant (Aug 26, 2014). This counts the ones the record shows paid.
5
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 12, 2028: its 20-year base term, with no adjustment for prosecution delay. Confidence: Low. 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 Sep 12, 2008, when application 12/209,273, the earliest non-provisional in its chain, was filed (this one was filed Aug 25, 2016) | Sep 12, 2028 | High confidence |
| Continuity chain | A reissue: its term follows the original patent's, with the original's term adjustment | follows the original patent | Medium confidence |
| Patent term adjustment | No term adjustment record on a grant after 2005, so none is added | no change | Medium confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Aug 26, 2022 | High confidence |
| Computed term end | The steps above, in order | Aug 26, 2022 | Low confidence |
This family
| US 8,116,841 | In force Aug 2030 | Aug 2030 |
| US 8,285,356 | In force no later than Sep 2028 | no later than Sep 2028 |
| US 8,818,481 | Surrendered on reissue Jul 2018 | Jul 2018 |
| US 9,770,182 | In force Sep 2028 | Sep 2028 |
| US RE46,926 | this patent Aug 2022 | Aug 2022 |
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 |
|---|---|---|---|
| Aug 26, 2019 Reel 50169, frame 847 | Bly, Mark J.; Amurthur, Badri; James, Kristofer J.; Libbus, Imad; Manicka, Yatheendhar D.; Mazar, Scott T.; Wang, Jerry S. | Medtronic, Inc. | Assignment of Assignor's Interest |
| Oct 11, 2019 Reel 50691, frame 962 | Corventis, Inc.; Medtronic Corventis, Inc. | Medtronic Corventis, Inc. | Merger and Change of Name |
| Oct 11, 2019 Reel 50712, frame 731 | Bly, Mark J.; Amurthur, Badri; James, Kristofer J.; Libbus, Imad; Manicka, Yatheendhar D.; Mazar, Scott T.; Wang, Jerry S. | Corventis, Inc. | Corrective Assignment to Correct the Assignee to Read Corventis, INC.2226 N. First Streetsan Jose, Ca 95131 Previously Recorded on Reel 050169 Frame 0847. Assignor(S) Hereby Confirms the Assignment. |
| Oct 11, 2019 Reel 50714, frame 254 | Medtronic Corventis, Inc. | Medtronic Monitoring, Inc. | Change of Name |
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.
Citations
57
later US patents cite this one
That is top 5% of utility patents granted in 2018 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.