Phosphonate Ester Derivatives and Methods of Synthesis Thereof
US 9,303,051 In force (reinstated)Term ends Jul 30, 2034 · Medium confidence
20-year base term ends Aug 31, 2031
Why Medium: A parent in the chain could not be resolved.
Aug 31, 2011
Jul 30, 2034
Apr 5, 2016
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 31, 2011, when the earliest non-provisional application in its chain was filed (this one was filed Jul 24, 2015); a parent in its chain could not be resolved (the next row) | Aug 31, 2031 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | +1,064 days, USPTO 35 U.S.C. 156 certificate | added to Aug 31, 2031: Jul 30, 2034 | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force (reinstated) | High confidence |
| Computed term end | The steps above, in order | Jul 30, 2034 | 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.