Method of Retrofitting a Pneumatic On-Demand Seed Delivery System and an Improved Pneumatic On-Demand Seed Delivery System
US 8,113,132 Surrendered on reissueSurrendered on reissue Feb 27, 2018 · High confidence
20-year base term ends Apr 30, 2027
Surrendered on reissue Feb 27, 2018 · its term and maintenance fees continue in US RE46,730 and US RE48,553.
Apr 30, 2007
Feb 27, 2018
Feb 14, 2012
Apr 30, 2027
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 30, 2007, when the earliest non-provisional application in its chain was filed (this one was filed Aug 5, 2010) | Apr 30, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,779,770) | resolves to Apr 30, 2027, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | no change | High confidence |
| Reissue | US RE46,730 and US RE48,553 issued Feb 27, 2018, and this patent's term continues in it (35 U.S.C. 251, 252) | surrendered Feb 27, 2018 | High confidence |
| Surrendered on reissue | The steps above, in order | Feb 27, 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
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.