Location System and Method for Assisting Emergency Services in Identifying the Physical Location of an IP Telephony User
US 8,059,631 Lapsed on the fee recordLapsed Nov 15, 2019 on the fee record · High confidence
20-year base term ends Jul 13, 2027
Second maintenance fee unpaid; grace period ended.
Jul 13, 2007
Nov 15, 2019
Nov 15, 2011
Sep 13, 2030
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jul 13, 2007, when this application, 11/826,304, was filed | Jul 13, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1158 days, USPTO patent term adjustment record | Sep 13, 2030 | 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 | 1 of 3 maintenance fees paid | lapsed Nov 15, 2019 | High confidence |
| Computed term end | The steps above, in order | Nov 15, 2019 | High 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.