Penn Oil Co. v. Vacuum Oil Co.

HITZ, Associate Justice.

This is an appeal from a decree of the Supreme Court of the District of Columbia granting a permanent injunction restraining the defendant company, its officers, agents, and servants from selling as “Mobiloil” any other oil, without first informing purchasers of the substitution.

The appellee here, plaintiff below, and hereafter called plaintiff, is a New York corporation engaged in refining and selling at wholesale lubricating oil for internal combustion engines.

*1009Its oil is marketed and sold under the trade-name “Mobiloil,” registered in the Patent Office as a…