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LI

Lightmatter, Inc.

First filing 2019
OverviewNotableFeesChangesFamiliesPatent listSources & methods

82 patents currently held

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
2 more records may belong here and await a decision; they are not counted.

The next term ends in Feb 2039. from the record

Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Feb 2039
Next term end
50
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.
  • 2 fees due Dec 6 to 27, 2026 · next Dec 6
  • 3 fees due Jan 4 to 25, 2027 · next Jan 4
  • 2 fees due Mar 12 to 26, 2027 · next Mar 12
  • 1 fee due Apr 3, 2027
    The maintenance fee for Hybrid Analog-Digital Matrix Processors (US 11,775,779) comes due Apr 3, 2027. Unpaid by Oct 4, 2027, it lapses early.
  • 1 fee due Jun 5, 2027
    The maintenance fee for Residue Number System in a Photonic Matrix Accelerator (US 11,836,466) comes due Jun 5, 2027. Unpaid by Dec 6, 2027, it lapses early.
  • 3 fees due Jul 2 to 30, 2027 · next Jul 2
  • 1 fee due Aug 13, 2027
    The maintenance fee for Vector Processor Data Storage (US 11,899,967) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
  • 2 fees due Sep 19 to 30, 2027 · next Sep 19
  • 2 fees due Oct 2 to 9, 2027 · next Oct 2

Which patents, and when each one lapses · Pro

Recent changes

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

What they patent

The 5 largest of its 50 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 D1,016,057Computer Chassis
In force
 · High confidence
In forceHigh confidence
US D1,018,522Computer Chassis
In force
 · High confidence
In forceHigh confidence
US D1,022,984Computer Chassis
In force
 · High confidence
In forceHigh confidence
US 11,367,711Optically Interfaced Stacked Memories and Related Methods and Systems
In force
 · High confidence
In forceHigh confidence
US 10,608,663Real-Number Photonic Encoding
In force
 · High confidence
In forceHigh confidence
US 10,740,693Systems and Methods for Training Matrix-Based Differentiable Programs
In force
 · High confidence
In forceHigh confidence
US 10,763,974Photonic Processing Systems and Methods
In force
 · High confidence
In forceHigh confidence
US 10,884,313High-Efficiency Multi-Slot Waveguide Nano-Opto-Electromechanical Phase Modulator
In force
 · High confidence
In forceHigh confidence
US 11,218,227Photonic Processing Systems and Methods
In force
 · High confidence
In forceHigh confidence
US 11,281,068High-Efficiency Multi-Slot Waveguide Nano-Opto-Electromechanical Phase Modulator
In force
 · High confidence
In forceHigh confidence
10 of 82 patents shown.
Pro members see all 82.
Pro members: see all 82 patents
Also on record, not counted in the 82: 62 applications pending · 7 applications abandoned. 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