Airborne electromagnetic time domain system, computer product and method
US 7,157,914 Surrendered on reissueSurrendered on reissue Mar 15, 2011 · From the USPTO record
20-year base term ended Nov 20, 2023
Surrendered on reissue Mar 15, 2011 · its term and maintenance fees continue in US RE42,217.
Nov 20, 2003
Mar 15, 2011
Jan 2, 2007
Apr 28, 2024
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Nov 20, 2003, when this application, 10/716,813, was filed | Nov 20, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +160 days, USPTO patent term adjustment record | Apr 28, 2024 | 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 | no change | Medium confidence |
| Reissue | US RE42,217 issued Mar 15, 2011, and this patent's term continues in it (35 U.S.C. 251, 252) | surrendered Mar 15, 2011 | High confidence |
| Surrendered on reissue | The steps above, in order | Mar 15, 2011 | From the USPTO record |
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.
Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.
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.