System for Balance Distribution of Requests Across Multiple Servers Using Dynamic Metrics

US 8,302,100 Lapsed on the fee record

Lapsed Oct 30, 2020 on the fee record · High confidence

Computed 20-year base term

Second maintenance fee unpaid; grace period ended.

Filed Aug 12, 2005 as application 11/202,644 · Granted Oct 30, 2012

Base term, 20 years from filing, plus 1336 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer

Today

Lapsed Oct 30, 2020

2005 2026

Clock starts
Aug 12, 2005

No longer in force
Oct 30, 2020

Granted
Oct 30, 2012

Term would have run to
May 5, 2023

base term after the term ends fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

1,336

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

Capped

Terminal disclaimer

Resolved from the filed document, referencing US 6,938,256.

1 of 2

Maintenance fees paid

Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Aug 12, 2005, when this application, 11/202,644, was filed	Aug 12, 2025	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+1336 days, USPTO patent term adjustment record	Apr 9, 2029	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 6,938,256)	capped to May 5, 2023	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	1 of 2 maintenance fees paid	lapsed Oct 30, 2020	High confidence
Computed term end	The steps above, in order	Oct 30, 2020	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.

System for Balance Distribution of Requests Across Multiple Servers Using Dynamic Metrics

Lapsed Oct 30, 2020 on the fee record · High confidence

20-year base term ended Aug 12, 2025

How we calculated this date

Sources