Protective Drainage Wraps
US 6,869,901 Term endedTerm ended Feb 20, 2021 · Medium confidence
20-year base term ended Feb 20, 2021
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 6,761,006), so the cap could be lower.
Feb 20, 2001
Feb 20, 2021
Mar 22, 2005
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Feb 20, 2001, when the earliest non-provisional application in its chain was filed (this one was filed Sep 26, 2002) | Feb 20, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +184 days, USPTO patent term adjustment record | Aug 23, 2021 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 6,761,006) | capped to Feb 20, 2021 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Feb 20, 2021 | 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.