Should this court disturb the ruling of the District Court in refusing to grant an interlocutory injunction, sought upon affidavits, exhibits,' and pleadings? The District Judge, in passing upon the question, said:
"After carefully reading the pleadings and supporting affidavits herein, and after considering the arguments of counsel, the court cannot declare that the right of the complainant is so free from doubt as to warrant the issuance of a prehminary injunction. The court cannot injure the business of the defendant by practically arresting its business in advance of a final hearing.
• “The injuries complained of have been going on admittedly since the 1st of January, 1925. The financial ability of defendants to respond in damages has not been questioned.
“No proceedings have been instituted by complainant to restrain the defendants from infringing upon their rights growing out of their letters patent, and so, without passing upon the ultimate rights of the parties herein, the court denies the application for a temporary injunction.”
Many interesting questions have been very ably argued in the briefs of respective counsel, and their solution challenges our interest and invites a discussion. After careful consideration of all of them, we are convinced that it would be a mistake to decide any of them upon the record before us. Certainly several of them cannot be disposed of finally without a fuU trial on the merits.
Our duty is well defined in Meccano, Limited, v. John Wanamaker, 253 U. S. 136, 40 S. Ct. 463, 64 L. Ed. 822; Standard Elevator Co. v. Crane Elevator Co., 56 F. 718, 6 C. C. A. 100; American Cereal Co. v. Eli Pettijohn Cereal Co., 76 F. 372, 22 C. C. A. 236.
To justify the issuance of a temporary injunction in a suit brought on a patent, or a breach of a license agreement, or to enjoin unfair methods of competition, plaintiff’s ease should be a clear one, free from reasonable doubts. Before the District Court’s ruling will be reversed, the record on appeal must disclose an improvident exercise of judicial discretion or a violation of some rule of equity. <
Upon all three of plaintiff’s theoriés we are convinced that the trial judge could fairly say he was not satisfied to act upon the affidavit and exhibit proof made in the court below, but was entitled to hear the parties and their witnesses in open court before he finally determined whether any relief should be granted the plaintiff. And in ease the plaintiff was entitled to relief, the court was also justified in asking that all the proof be offered that he might determine the character of the relief he should order.
The order is affirmed.