The Patent Finder

A. Duda & Sons, Inc.

37 patents currently held · Updated Nov 15, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 2 name spellings.

5
Ending by 2030
Jan 2029
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.
  • 1 fee due Dec 4, 2026
    The maintenance fee for Celery cultivar TBG 34 (US 10,306,857) comes due Dec 4, 2026. Unpaid by Jun 4, 2027, it lapses early.
  • 1 fee due Mar 5, 2027
    The maintenance fee for Radish cultivar TBG 55 (US 11,744,201) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
  • 1 fee due Apr 15, 2027
    The maintenance fee for Celery cultivar TBG 29 (US 10,440,913) comes due Apr 15, 2027. Unpaid by Oct 15, 2027, it lapses early.
  • 1 fee due Sep 30, 2027
    The maintenance fee for Radish cultivar TBG 38 (US 10,602,695) comes due Sep 30, 2027. Unpaid by Mar 31, 2028, it lapses early.
  • 1 fee due Oct 19, 2027
    The maintenance fee for Celery cultivar ADS-26 (US 9,313,962) comes due Oct 19, 2027. Unpaid by Apr 19, 2028, it lapses early.
  • 1 fee due Nov 3, 2027
    The maintenance fee for Celery cultivar ADS-25 (US 9,326,469) comes due Nov 3, 2027. Unpaid by May 3, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 of the patents on this record was granted since Aug 17, 2026
  • 2 terms have ended since Aug 17, 2026

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 7,968,774Celery cultivar ADS-16
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,964,779Celery cultivar ADS-18
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,994,401Celery cultivar ADS-17
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,088,980Celery cultivar ADS-15
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,071,863Celery cultivar ADS-19
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,575,453Celery cultivar ADS-21
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,524,993Celery cultivar ADS-20
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,598,425Celery cultivar ADS-23
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,598,424Celery cultivar ADS-22
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,598,426Celery cultivar ADS-24
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 37 patents shown.
Pro members see all 37.
Pro members: see all 37 patents
Also on record, not counted in the 37: 24 ended at full term · 1 surrendered on reissue. 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.

1 pending · 3 no status recorded

List them

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