The Patent Finder
SI

Sifive, Inc.

First filing 2018
OverviewNotableFeesChangesFamiliesPatent listSources & methods

109 patents currently held

5 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Mar 2035. from the record

Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Mar 2035
Next term end
86
Patent families

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
notable patents fee due within 90 days all others Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 4 fees due Dec 13 to 27, 2026 · next Dec 13
  • 1 fee due Mar 5, 2027
    The maintenance fee for Automated Microprocessor Design (US 11,748,536) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
  • 1 fee due Apr 24, 2027
    The maintenance fee for Fetch Stage Handling of Indirect Jumps in a Processor Pipeline (US 11,797,308) comes due Apr 24, 2027. Unpaid by Oct 25, 2027, it lapses early.
  • 1 fee due Jun 19, 2027
    The maintenance fee for Data Cache with Prediction Hints for Cache Hits (US 11,847,060) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
  • 1 fee due Jul 2, 2027
    The maintenance fee for Macro-Op Fusion (US 11,861,365) comes due Jul 2, 2027. Unpaid by Jan 3, 2028, it lapses early.
  • 1 fee due Aug 27, 2027
    The maintenance fee for Generation of Dynamic Design Flows for Integrated Circuits (US 11,914,933) comes due Aug 27, 2027. Unpaid by Feb 28, 2028, it lapses early.
  • 1 fee due Sep 5, 2027
    The maintenance fee for Integrated Circuits as a Service (US 11,922,101) comes due Sep 5, 2027. Unpaid by Mar 6, 2028, it lapses early.
  • 1 fee due Oct 23, 2027
    The maintenance fee for Checker Cores for Fault Tolerant Processing (US 11,966,290) comes due Oct 23, 2027. Unpaid by Apr 24, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 10 of the patents on this record were granted since Aug 16, 2026

What they patent

The 5 largest of its 86 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Patents held now

Soonest term end first.
PatentTitleStatusExpiresConfidence
US D879,730Circuit Board
In force
 · High confidence
In forceHigh confidence
US D900,044Circuit Board
In force
 · High confidence
In forceHigh confidence
US 11,861,365Macro-Op Fusion
In force
 · High confidence
In forceHigh confidence
US 10,996,952Macro-Op Fusion
In force
 · High confidence
In forceHigh confidence
US 11,429,392Secure Predictors for Speculative Execution
In force
 · High confidence
In forceHigh confidence
US 10,902,171Clock Crossing Interface for Integrated Circuit Generation
In force
 · High confidence
In forceHigh confidence
US 11,321,511Reset Crossing and Clock Crossing Interface for Integrated Circuit Generation
In force
 · Medium confidence
In forceMedium confidence
US 11,675,945Reset Crossing and Clock Crossing Interface for Integrated Circuit Generation
In force
 · Medium confidence
In forceMedium confidence
US 11,048,837Generation of Dynamic Design Flows for Integrated Circuits
In force
 · High confidence
In forceHigh confidence
US 11,630,930Generation of Dynamic Design Flows for Integrated Circuits
In force
 · High confidence
In forceHigh confidence
10 of 109 patents shown.
Pro members see all 109.
Pro members: see all 109 patents
Also on record, not counted in the 109: 5 patents in force now held by others · 51 applications pending. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
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 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited