Automatic Mattress Selection System
US 6,990,425 Surrendered on reissueSurrendered on reissue Oct 5, 2010 · Low confidence
20-year base term ended Nov 28, 2020
Surrendered on reissue Oct 5, 2010 · its term and maintenance fees continue in US RE41,809.
Nov 28, 2000
Oct 5, 2010
Jan 24, 2006
Nov 28, 2020
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Nov 28, 2000, when the earliest non-provisional application in its chain was filed (this one was filed May 20, 2004); a parent in its chain could not be resolved (the next row) | Nov 28, 2020 | 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 resolved from the filed document (refs US 6,741,950) | resolves to Nov 28, 2020, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case" | no change | Low confidence |
| Reissue | US RE41,809 issued Oct 5, 2010, and this patent's term continues in it (35 U.S.C. 251, 252) | surrendered Oct 5, 2010 | High confidence |
| Surrendered on reissue | The steps above, in order | Oct 5, 2010 | Low 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.