Pet Inventions That Made Millions: USPTO Patents Behind the Top Brands

Americans spent $147 billion on their pets in 2024, and a startling share of that money flows through patents. The Kong rubber chew toy, the Furminator de-shedding tool, the Litter Robot self-cleaning litter box — every one of them is anchored by a patent that lets the inventor (or licensee) charge premium prices while competitors are blocked from copying the exact mechanism. This page catalogs the pet patents that built real businesses, with verifiable USPTO numbers you can pull up for yourself.

10 pet patents that built real businesses

1. Kong rubber chew toy. US 4,802,444 — Animal toy. The hollow, snowman-shaped rubber chew toy that you stuff with peanut butter or kibble. Filed in 1986; the company was founded on the back of this single patent and now sells across 80+ countries.
2. Litter Robot self-cleaning litter box. US 6,082,302 — Self-cleaning litter system. The rotating sphere that sifts clumped waste into a sealed compartment. Original patent issued in 2000; AutoPets (the company that makes it) was acquired in 2021 for roughly $360M.
3. Furminator de-shedding tool. US 7,077,076 — Pet grooming tool. The notched stainless-steel blade that pulls loose undercoat without cutting the top coat. Acquired by Spectrum Brands in 2010 reportedly for ~$140M, mostly on the strength of the patent and the brand it created.
4. Greenies dental chew. The toothbrush-shaped, fully-edible dental chew. Acquired by Mars Petcare in 2006 for roughly $300M.
5. Kitty Litter — granulated clay absorbent. US 2,649,759 — Treated clay animal litter. The 1953 patent (filed 1950 by inventor S. E. Gibbs) covering granulated absorbent clay as a replacement for ash and sand. Edward Lowe didn’t file the patent — but he commercialized the idea, branded it Kitty Litter, and built the business that functionally invented the modern indoor cat. The Lowe family sold the company in 1990 for ~$200M.
6. PetSafe invisible fence (boundary collar). US 3,753,421 — Method and apparatus for confining or excluding animals. The buried-wire boundary system with the receiver collar. The patent expired decades ago, but the brand it created is still the category leader.
7. The Halti head collar. The horse-bridle-style head collar that gives owners control of pulling dogs. Dr. Roger Mugford filed in 1979 and licensed it to The Company of Animals for a royalty stream that’s still paying out.
8. The Chuckit ball launcher. The bent-handle plastic stick that picks up and launches a tennis ball without you touching the slimy thing. Acquired by Petmate in 2006.
9. The Snuggle Puppy comfort toy. The plush dog with a pocket for a heat pack and a battery-driven heartbeat used to settle anxious puppies. Built into a multi-million-dollar brand from a single inventor’s patent and Etsy-tier early sales.

Why pet inventions are uniquely patent-friendly

Three structural reasons pet products tend to clear examination faster and command better margins than most consumer-product categories:

• Mechanical claims are easier to draft than software claims. A bent plastic ball-launcher handle has a precise geometry and a clear function. Compare that to a software claim that has to clear the Alice abstract-idea hurdle (covered in detail on our rejected patents page).
• Pet-product prior art is shallow. The CPC class A01K (animal husbandry) has a fraction of the filings that, say, semiconductor manufacturing has. Less prior art means a higher chance your application clears § 102 and § 103.
• Customers pay premium prices for genuinely-better tools.A Furminator costs $40 against $8 for a generic shedding brush. A Kong is 4× the price of a generic chew toy. Patented mechanism + visible quality difference + emotional purchase = strong margin.

The Kong story: a brake-job rubber chunk that became a $200M brand

Joe Markham was a VW mechanic in 1976. His German Shepherd, Fritz, would chew rocks and break his teeth on them. One day, Markham was working on a VW bus suspension and tossed Fritz a rubber suspension stop to chew on. Fritz loved it; he never went back to rocks. Markham noticed.

Markham started molding rubber chunks in the same shape and selling them to local pet stores. By 1986 he had refined the shape into the now-iconic snowman with a hollow interior (so you can stuff treats inside), and filed US 4,802,444. The patent description is two pages long. The claims are simple. The product hasn’t materially changed in 40 years and it remains the category leader.

The lesson isn’t “invent a chew toy.” It’s that the Kong patent succeeded because it described a specific physical object that did aspecific functional thing (dispense treats while resisting destruction by large dogs) using a specific material (a particular density of rubber). Vague patents fail; concrete ones succeed.

How to spot a patentable pet-product idea

A simple four-question screen we’ve seen track real outcomes:

1. Does it solve a problem an actual pet owner has talked about?Walk the aisles of a PetSmart and listen. The complaints — “the litter sticks to my cat’s paws,” “my dog gets the leash tangled around fences,” “the carrier gets soaked when she has accidents” — are exactly where new patents come from.
2. Does the solution involve a physical mechanism? A shape, a material, a moving part, a fastening method. Mechanisms are easier to claim than methods.
3. Has nobody made it yet? Use our free patent screener and a 20-minute search on Google Patents and Amazon. If a near-identical product shows up, you’re probably looking at prior art under § 102.
4. Would a pet owner pay 2× the generic price for it? The Kong test. Patents only earn you money if customers will pay a premium for the patent-protected version.

From our spoke library

Some pet-related patents we’ve catalogued so far:

• US 5,037,018 — Automatic feeder
• US 6,067,018 — Lost pet notification system
• US 5,482,008 — Electronic animal identification system
• US 6,235,036 — Ear tag applicator

Browse the full pet-products cluster as our daily translation pipeline keeps adding editorial copy to each spoke.

Related guides

More everyday products with under-the-hood patent stories:

• Famous patented products you use every day — Velcro, Post-it, LEGO, and the unlikely paths from prototype to USPTO grant.
• Kitchen gadget patents worth a fortune — Instant Pot, Yeti, Stanley Quencher, and the consumer-product patents quietly generating billions.

Ready to file your own?

Pet products are the single most-replicated category on Amazon. The only reliable defense against a $9 knockoff is a patent. Lock in your priority date with a provisional today — you have 12 months to refine the prototype and a year of “patent pending” protection while you do.

File a provisional patent application with LegalZoom →

(Affiliate link — we may earn a commission at no extra cost to you. We use LegalZoom for routine pet-product filings; for complex mechanical claims we still recommend a registered patent attorney.)