Compact Polarization-Sensitive and Phase-Sensitive Antenna with Directionality and Multi-Frequency Resonances
US 7,750,855 Lapsed on the fee recordLapsed Jul 6, 2018 on the fee record · High confidence
20-year base term ends Apr 3, 2027
Second maintenance fee unpaid; grace period ended.
Apr 3, 2007
Jul 6, 2018
Jul 6, 2010
Jun 2, 2027
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 3, 2007, when this application, 11/696,040, was filed | Apr 3, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +60 days, USPTO patent term adjustment record | Jun 2, 2027 | 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 Jul 6, 2018 | High confidence |
| Computed term end | The steps above, in order | Jul 6, 2018 | 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
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