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PO

Porter Corp.

Filings on record here from 2001, where this site's data begins
OverviewNotableFeesChangesFamiliesPatent listSources & methods

Four patents currently held, every record listed here

2 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.
106 more records may belong here and await a decision; they are not counted.

The next term ends in Mar 2035. from the record

Of the 2 now held by other companies, 2 name Maysteel Industries LLC as their current owner. Each row says so.

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

When these terms end

Each bar runs from grant to computed term end. 2020 to 2041.
US D877,496 Shoulder Strap for Bag And/Or Carrier Mar 10, 2035
US 10,636,258 Automated Banking Machine Controlled Responsive To Data Bearing Records With Secure Chest May 15, 2038
US D1,040,521 Shoulder Strap for Bag And/Or Carrier Sep 3, 2039
US 12,154,415 Secure Chest Feb 10, 2041
US 12,118,860 Secure Chest Mar 8, 2041
US D1,146,303 Backpack Sep 8, 2041
202420282032203620402041
Every computed term in this portfolio is shown above.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 patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 2 of the currently held patents qualify as notable.

Formerly held, still cited

Notable
The earliest of the three still in force, granted 2020 and renewed since. Its term ends first, in 2038.
Ends May 2038 · High confidence

Fee deadlines

No maintenance fee falls due on this company's record before Nov 10, 2027.

Recent changes

  • 1 of the patents on this record was granted since Aug 16, 2026

What they patent

Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.
Shoulder Strap for Bag And/Or Carrier2 in forceto Sep 2039
Backpack1 in forceto Sep 2041
Secure Chest1 in forceto Feb 2041

Patents held now

Soonest term end first.

Showing 1 to 4 of 4

PatentTitleStatusExpiresConfidence
US D877,496Shoulder Strap for Bag And/Or Carrier
In force
 · High confidence
In forceHigh confidence
US D1,040,521Shoulder Strap for Bag And/Or Carrier
In force
 · High confidence
In forceHigh confidence
US 12,154,415Secure Chest
In force
 · High confidence
In forceHigh confidence
US D1,146,303Backpack
In force
 · High confidence
In forceHigh confidence
Also on record, not counted in the 4: 2 patents in force now held by others · 47 patents ended · 15 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
2 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed
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