Term ends no later than Apr 18, 2031 · Low confidence
20-year base term ends Apr 18, 2031
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Apr 18, 2011
Apr 18, 2031
Apr 25, 2017
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 3 maintenance fees are paid so far. Confidence: Low. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 18, 2011, when application 13/089,063, the earliest non-provisional in its chain, was filed (this one was filed May 20, 2015); a parent in its chain could not be resolved (the next row) | Apr 18, 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 | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Apr 18, 2031 | Low confidence |
This family
| US 8,590,838 | In force Dec 2031 | Dec 2031 |
| Application PCT/US2011/033090 | PCT application no patent term | no patent term |
| US 9,038,946 | In force Jul 2031 | Jul 2031 |
| Application PCT/US2013/050342 | PCT application no patent term | no patent term |
| US 9,073,641 | In force Apr 2031 | Apr 2031 |
| US D749,709 | In force Feb 2030 | Feb 2030 |
| US 9,365,292 | In force Apr 2031 | Apr 2031 |
| US 9,434,476 | In force Apr 2031 | Apr 2031 |
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.
What's changing
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Apr 18, 2031. We will not guess the cap.