Catalyst Edge ยท Patent Sunset Tracker

Inventions entering
the public domain

495452 US patents are about to expire โ€” and the next one Isabella Gilbert wrote is probably in here. Public domain means anyone can manufacture and sell. The next Dimple Maker. The next viral $15-on-Etsy product.

495452
tracked
11
days to nearest
73
consumer-class
500
this quarter

Three landmines. Three checks per pick.

Running these three checks before you manufacture is the moat โ€” our biggest unfair advantage over every other "expired patent" list on the internet. Automated verification is shipping now via the USPTO Open Data Portal; once a pick goes through the guardrails it is marked VERIFIED, NEEDS REVIEW, or DO NOT TOUCH. Until then, every pick links you straight to the USPTO databases you can run by hand.

01

Is the patent actually expired?

Utility = 20y from filing, design = 14y from grant. But a continuation-in-part or reissue on a modern variant might still be active. Maintenance fees that lapsed also kill enforceability.

โš  check via USPTO PAIR
02

Is the brand still trademarked?

Trademarks last forever. The patent on the original Hula Hoop expired decades ago โ€” but Hula Hoop is still a registered Wham-O trademark. Sell the toy under any other name.

โš  check via USPTO TSDR API
03

Is there an active design-patent variant?

Lululemon vs Costco (2025) โ€” design-patent enforcement on modern variants is escalating. A 2018 design patent on the same product family can trigger TROs + frozen accounts.

โš  check via USPTO design-patent search

In 1937, Isabella Gilbert patented a beauty machine.

Her dimple maker โ€” two metal arms with marble nubs โ€” was supposed to create dimples by pinching cheeks. The American Medical Association hated it. Her patent expired sixty-four years ago.

Today: 60M+ TikTok views. $15 on Etsy. Manufacturing cost in Yiwu: under $2.

This is the playbook. Find an expired patent. Manufacture cheaply. Sell on TikTok Shop. The product itself is the marketing.

60M
TikTok views
$15
retail
9ร—
margin
500
expiring this quarter
< 90 days
0
next quarter
90-180 days
0
next 12 months
180-365 days
0
12-36 months out
forward

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expires
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Cosmetic composition comprising a cation, a liquid fatty substance and a sorbitan ester, a

expires
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โš  review (55)

Reflexive education: a method for automated delivery of educational material linked to obj

expires
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filed
2006-10-02
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pet
โš  review (55)

Absorbent article for application to human or animal skin surfaces

expires
2026-10-31
in
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filed
2006-10-31
tap to view โ†—
furniture
โœ“ verified (95)

Replacement indicator timer for implantable medical devices

expires
2026-10-04
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filed
2006-10-04
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Implantable medical device with variable data retransmission characteristics based upon da

expires
2026-10-30
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filed
2006-10-30
tap to view โ†—
pet
โœ“ verified (95)

Catheter, examination system and thrombus removing device

expires
2026-10-25
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filed
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pet
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Echo-opaque urethral catheter

expires
2026-10-10
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filed
2006-10-10
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โš  review (55)

Dielectric antenna device for wireless communications

expires
2026-10-09
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2006-10-09
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Redaction engine for electronic documents with multiple types, formats and/or categories

expires
2026-10-06
in
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filed
2006-10-06
tap to view โ†—
pet
โœ“ verified (95)

System and method for adjusting the behavior of an application based on the DRM status of

expires
2026-10-23
in
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filed
2006-10-23
tap to view โ†—

Full sunset list

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