Two-Way Signal Positioning Method and Two-Way Signal Positioning System Thereof
US 11,553,451 In forceTerm ends Sep 29, 2040 · Medium confidence
20-year base term ends Jan 27, 2041
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 11,454,695), so the cap could be lower.
Jan 27, 2021
Sep 29, 2040
Jan 10, 2023
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jan 27, 2021, when this application, 17/159,588, was filed | Jan 27, 2041 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +82 days, USPTO patent term adjustment record | Apr 19, 2041 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,454,695) | capped to Sep 29, 2040 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 29, 2040 | Medium confidence |
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.