Haupt v. United States

Background

An engineer and patentee (the appellant) developed a single-jetty design he said could create and maintain a deep channel without a second jetty or extensive dredging. He licensed his plans to a private Aransas Pass Harbor Company, supervised construction of a modified S-shaped jetty, and later brought his ideas to Congress after private efforts faltered. The United States then funded continued work on the pass in several appropriations, using plans described as those of the Harbor Company and modified with the appellant’s input.

Reasoning

The central question was whether the Government had used the inventor’s patented device and whether a contract — express or implied — to pay him could be found. The Court relied on the Court of Claims’ findings that the experimental work from 1896 to 1906 failed to produce the required navigable channel, that later government plans added a second, parallel jetty, and that the final completed work did not embody the appellant’s patent. The Court read the appropriation acts as authorizing a practical trial of the idea rather than creating a promise to pay. Because the record showed no use of the patented devices and no basis for implying a payment contract, recovery was not permitted.

Real world impact

The ruling leaves the inventor without compensation and confirms that Congress and the Government may fund experimental public works without creating an obligation to pay inventors unless payment is clearly promised. The Aransas Pass channel was ultimately completed with a two-jetty plan and dredging, and vessels were using the pass by 1912, but the Court found that the successful later construction did not rely on the appellant’s patented devices.