Methods and Systems for Detecting and Preventing the Spread of Malware on Instant Messaging (IM) Networks by Using Fictitious Buddies
US 7,600,258 Lapsed on the fee recordLapsed Oct 6, 2017 on the fee record · High confidence
20-year base term ended Jul 1, 2025
Second maintenance fee unpaid; grace period ended.
Jul 1, 2005
Oct 6, 2017
Oct 6, 2009
Aug 29, 2027
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jul 1, 2005, when this application, 11/171,248, was filed | Jul 1, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +789 days, USPTO patent term adjustment record | Aug 29, 2027 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Oct 6, 2017 | High confidence |
| Computed term end | The steps above, in order | Oct 6, 2017 | 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.