What follows is an opinion from a United States Court of Appeals. Your task is to identify the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court).

Opinion:
In the Matter of the Application of Harry VISSERING.
Court of Appeals of District of Columbia.
Submitted January 11, 1928.
Decided March 5, 1928.
No. 2006.
Appeal from the Commissioner of Patents.
H. H. Benjamin, of Chicago, Ill., and J. T. Basseehes, of New York City, for appellant.
T. A. Hostetler, of Washington, D. C., for Com’r of Patents.
Before MARTIN, Chief Justice; VAN ORSDEL, Associate Justice; and SMITH, Judge of the United States Court of Customs Appeals.
VAN ORSDEL, Associate Justice.
This appeal is from the Commissioner of Patents rejecting appellant’s application for a patent for a car brake step described in the following claim: “1. A brake step adapted to be secured to a car body and having a shelf portion adapted to act as a rest for the foot and provided with an abutment portion comprising a plurality of continuous spaced pressed portions.”
The step is Z-shaped in cross section, and supported by V-shaped brackets. It is made of pressed sheet metal provided with corrugations on the upper surface to prevent the user from slipping.
In the opinions of the tribunals of the Patent Office, the construction upon which the patent is sought is clearly pointed out in three references relied upon, and from an examination of the prior art we agree with the Commissioner “that applicant has done no more than pick out one feature from one patent, another from another, and so on, and unite them in a single structure. The step possesses no new or improved function as a result of such assemblage of old features.”
The decision of the Commissioner is affirmed.

Question: What is the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court)?

Choices:
Trial (either jury or bench trial)
Injunction or denial of injunction or stay of injunction
Summary judgment or denial of summary judgment
Guilty plea or denial of motion to withdraw plea
Dismissal (include dismissal of petition for habeas corpus)
Appeals of post judgment orders (e.g., attorneys' fees, costs, damages, JNOV - judgment nothwithstanding the verdict)
Appeal of post settlement orders
Not a final judgment: interlocutory appeal
Not a final judgment: mandamus
Other (e.g., pre-trial orders, rulings on motions, directed verdicts) or could not determine nature of final judgment
Does not fit any of the above categories, but opinion mentions a "trial judge"
Not applicable (e.g., decision below was by a federal administrative agency, tax court)

Answer: 9