The Patent Finder

Clearfield, Inc.

63 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
4
Ending by 2030
Sep 2028
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

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 13 to 20, 2026 · next Dec 13
  • 2 fees due Jan 16 to 25, 2027 · next Jan 16
  • 1 fee due Feb 6, 2027
    The maintenance fee for Optical fiber pathway duct (US 10,371,916) comes due Feb 6, 2027. Unpaid by Aug 6, 2027, it lapses early.
  • 1 fee due Apr 15, 2027
    The maintenance fee for Optical Fiber Management (US 10,444,458) comes due Apr 15, 2027. Unpaid by Oct 15, 2027, it lapses early.
  • 1 fee due May 21, 2027
    The maintenance fee for Protective cap for an optical fiber connector (US 11,822,131) comes due May 21, 2027. Unpaid by Nov 22, 2027, it lapses early.
  • 2 fees due Jun 3 to 26, 2027 · next Jun 3
  • 1 fee due Jul 23, 2027
    The maintenance fee for Fiber optics deploy reel (US 11,880,080) comes due Jul 23, 2027. Unpaid by Jan 24, 2028, it lapses early.
  • 1 fee due Aug 13, 2027
    The maintenance fee for Flexible optical fiber connectors and assemblies (US 11,899,250) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
  • 2 fees due Sep 29 to 30, 2027 · next Sep 29
  • 1 fee due Oct 30, 2027
    The maintenance fee for Sealed Optical Fiber Terminal (US 11,971,599) comes due Oct 30, 2027. Unpaid by May 1, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 7,945,138Modular optical fiber cassette
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,059,932Modular optical fiber cassette
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,374,477Modular optical fiber cassettes
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,751,674Modular optical fiber cassettes and fiber management methods
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,031,304Optical fiber management system
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,209,469Optical Fiber Management System
In force
 · Medium confidence
In forceMedium confidence
US 9,297,976Optical fiber connector
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,678,285Optical fiber connector
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,007,068Optical fiber connector
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,039,293Multiport Optical Fiber Terminal
In force
 · High confidence
In forceHigh confidence
10 of 63 patents shown.
Pro members see all 63.
Pro members: see all 63 patents
Also on record, not counted in the 63: 1 lapsed for an unpaid fee. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

6 pending · 3 no status recorded

List them

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