Term ends Nov 12, 2028 · Low confidence
20-year base term ends Mar 11, 2028
Grace period ended Nov 6, 2026 · no payment on record as of the Nov 10, 2026 fee file · lapse expected
Held by Contactwave LLC
Filed Mar 11, 2008 as application 12/046,358 · Granted Nov 6, 2018
Base term plus 246 days of patent term adjustment (USPTO delay)
Today
2008
2028
Clock starts
Mar 11, 2008
Mar 11, 2008
Term ends
Nov 12, 2028
Nov 12, 2028
Granted
Nov 6, 2018
Nov 6, 2018
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
246
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
13
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 246 days past its 20-year base term on prosecution delay. 1 of 2 maintenance fees is paid so far. Confidence: Low: the grace period for its second maintenance fee ended Nov 6, 2026 with no payment on record. 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 11, 2008, when this application, 12/046,358, was filed | Mar 11, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +246 days, USPTO patent term adjustment record | Nov 12, 2028 | 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 | No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case"; the grace period ended with no payment on record in the fee file | grace period ended Nov 6, 2026 | Low confidence |
| Computed term end | The steps above, in order | Nov 12, 2028 | Low confidence |
This family
| US 8,254,893 | Lapsed on the fee record Aug 2020 | Aug 2020 |
| US 7,533,343 | Term ended Sep 2026 | Sep 2026 |
| US 7,593,721 | Lapsed on the fee record Sep 2017 | Sep 2017 |
| US 8,180,329 | Lapsed on the fee record May 2024 | May 2024 |
| US 10,122,845 | this patent Nov 2028 | Nov 2028 |
| US 8,848,892 | Lapsed on the fee record Sep 2022 | Sep 2022 |
| Application 12/122,705 | Abandoned not computed | not computed |
| Application 12/140,684 | Abandoned not computed | not computed |
8 of 13 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 |
|---|---|---|---|
| Oct 12, 2024 Reel 68880, frame 971 | Ratnakar, Nitesh, DR. | Mira Advanced Technology Systems, Inc. | Assignment of Assignor's Interest |
| Jan 8, 2025 Reel 69778, frame 811 | Mira Advanced Technology Systems, Inc. | Contactwave 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.
What's changing
Nov 6
Grace period ended Nov 6, 2026 with no payment on record. The term ends early once USPTO posts the lapse
Nov 2028
Term ends Nov 12, 2028.
Note
The 246 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
22
later US patents cite this one
That is top 25% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.