Carbice Corp. of America v. American Patents Development Corp.
Headline: Court blocks patentee’s effort to force customers to buy dry ice only from the patentee, ruling a patent cannot be used to monopolize unpatented supplies and denying the owner relief.
Holding: The Court ruled that a patent owner may not use its patent to force customers to buy unpatented supplies from the patent owner, and therefore denied relief against a competitor selling dry ice.
- Stops patentees from requiring buyers to purchase unpatented supplies only from them.
- Allows competing sellers of dry ice to supply customers using the patented package.
- Limits patent holders from expanding monopoly into unpatented goods, with antitrust implications.
Summary
Background
The American Patents Development Corporation owned a patent on a shipping package that uses solid carbon dioxide (dry ice) to keep food frozen. The Dry Ice Corporation made and sold the dry ice and included invoice language suggesting customers could use the company’s product only with approved containers. Carbice Company also manufactured dry ice and sold it to customers who planned to use it in the patented shipping packages. The patent owner and its licensee sued Carbice for contributory infringement, but the lower courts split: the District Court dismissed for lack of infringement, the Court of Appeals found infringement, and the case reached the Supreme Court.
Reasoning
The central question was whether the owner of a patent on a combination product may, by license terms or invoices, force buyers to obtain an unpatented supply (dry ice) only from the patentee and thus extend the patent monopoly. The Court held that a patentee cannot expand its limited patent monopoly to control the sale of unpatented materials used with the invention. Citing earlier decisions, the Court explained that allowing such conditions would let a patentee derive profit from unpatented supplies instead of the invention itself. Because the Dry Ice Corporation did not make or sell the complete patented package and sought to control the unpatented refrigerant, the Court denied the requested relief against Carbice.
Real world impact
The decision prevents patent owners from using patents to monopolize unpatented materials like dry ice. Sellers of unpatented supplies may continue to sell to customers who use those supplies in patented combinations. The ruling also links unreasonable extension of patent control to potential antitrust concerns.
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