The Patent Finder
US

Nonaligned Access to Random Access Memory

US 6,975,553 Surrendered on reissue
OverviewSources & methods

Surrendered on reissue Jul 8, 2014 · Low confidence

Surrendered on reissue Jul 8, 2014 · its term and maintenance fees continue in US RE45,000.

Held by Intellectual Ventures I LLC
Filed Apr 5, 2004 as application 10/816,849 · Granted Dec 13, 2005
Base term, 20 years from filing, plus 37 days of patent term adjustment (USPTO delay)
Today
Surrendered Jul 8, 2014
2004 2026
Clock starts
Apr 5, 2004
No longer in force
Jul 8, 2014
Granted
Dec 13, 2005
Term would have run to
May 12, 2024
base term patent term adjustment 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
37
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 of 3
Maintenance fees paid
Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.

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 filingClock starts Apr 5, 2004, when this application, 10/816,849, was filedApr 5, 2024High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+37 days, USPTO patent term adjustment recordMay 12, 2024High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee eventsNo 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 changeLow confidence
ReissueUS RE45,000 issued Jul 8, 2014, and this patent's term continues in it (35 U.S.C. 251, 252)surrendered Jul 8, 2014High confidence
Surrendered on reissueThe steps above, in orderJul 8, 2014Low 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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited