General Talking Pictures Corp. v. Western Electric Co.

1939-01-03

Headline: Court affirms that a manufacturer and buyer infringed patents by making and selling amplifiers outside a limited license, allowing patent owners to enforce field-of-use limits against such sales.

Holding: The Court affirmed that the manufacturer and buyer infringed because the amplifiers were made and sold outside the license’s allowed uses, and it declined to decide whether patent owners can restrict lawful post-sale use.

Real World Impact:

Allows patent owners to sue when devices are made or sold outside license limits.
Makes manufacturers liable for exceeding field-of-use licenses.
Warns buyers that knowingly purchasing outside-licensed devices risks infringement.

Topics: patent limits, product licensing, manufacturing and sales, consumer use restrictions

Summary

Background

A group of patent owners licensed different makers to use vacuum-tube amplifier patents in separate fields. One manufacturer was licensed only for home radio uses but made amplifiers for theatre sound systems and sold them to a movie-equipment company that bought them knowing the license did not allow theatre sales. The dispute reached the Court after lower courts found patent infringement.

Reasoning

The central question was whether a patent owner can restrict how a device is used after it is made and sold. The Court avoided answering that broad question because, on the facts, the amplifiers here were made and sold outside the manufacturer’s license. The Court said restrictive licenses are generally lawful, concluded that the manufacturer had exceeded its license and that the buyer knowingly used the invention without permission, and therefore both were liable for infringement. The Court expressly declined to rule on whether a patentee can control the use of an article that was lawfully sold in ordinary trade or by attaching a notice.

Real world impact

For manufacturers and equipment sellers, the ruling makes clear that selling devices outside the scope of a patent license can lead to liability. For buyers, the decision warns that knowingly buying items sold outside licensed uses risks infringement claims. But the Court left open the broader question of whether lawful post-sale restrictions or notices can bind ordinary purchasers, so uncertainty remains for typical retail sales.

Dissents or concurrances

Justice Black dissented, arguing long-standing law holds that a sale exhausts patent rights and that owners should be free to use bought items; he warned this decision departs from prior precedent.