List of United States Supreme Court cases, volume 52

In 1874, the U.S. government created the United States Reports, and retroactively numbered older privately-published case reports as part of the new series. As a result, cases appearing in volumes 1–90 of U.S. Reports have dual citation forms; one for the volume number of U.S. Reports, and one for the volume number of the reports named for the relevant reporter of decisions (these are called "nominative reports").

Starting with the 42nd volume of U.S. Reports, the Reporter of Decisions of the Supreme Court of the United States was Benjamin Chew Howard. Howard was Reporter of Decisions from 1843 to 1860, covering volumes 42 through 65 of United States Reports which correspond to volumes 1 through 24 of his Howard's Reports. As such, the dual form of citation to, for example, United States v. City of Philadelphia is 52 U.S. (11 How.) 609 (1851).

The Supreme Court is established by Article III, Section 1 of the Constitution of the United States, which says: "The judicial Power of the United States, shall be vested in one supreme Court . . .". The size of the Court is not specified; the Constitution leaves it to Congress to set the number of justices. Under the Judiciary Act of 1789 Congress originally fixed the number of justices at six (one chief justice and five associate justices).^[2] Since 1789 Congress has varied the size of the Court from six to seven, nine, ten, and back to nine justices (always including one chief justice).

When the cases in 52 U.S. (11 How.) were decided the Court comprised these nine members:

Portrait	Justice	Office	Home State	Succeeded	Date confirmed by the Senate (Vote)	Tenure on Supreme Court
	Roger B. Taney	Chief Justice	Maryland	John Marshall	March 15, 1836 (29–15)	March 28, 1836 – October 12, 1864 (Died)
	John McLean	Associate Justice	Ohio	Robert Trimble	March 7, 1829 (Acclamation)	January 11, 1830 – April 4, 1861 (Died)
	James Moore Wayne	Associate Justice	Georgia	William Johnson	January 9, 1835 (Acclamation)	January 14, 1835 – July 5, 1867 (Died)
	John Catron	Associate Justice	Tennessee	newly-created seat	March 8, 1837 (28–15)	May 1, 1837 – May 30, 1865 (Died)
	John McKinley	Associate Justice	Alabama	newly-created seat	September 25, 1837 (Acclamation)	January 9, 1838 – July 19, 1852 (Died)
	Peter Vivian Daniel	Associate Justice	Virginia	Philip P. Barbour	March 2, 1841 (25–5)	January 10, 1842 – May 31, 1860 (Died)
	Samuel Nelson	Associate Justice	New York	Smith Thompson	February 14, 1845 (Acclamation)	February 27, 1845 – November 28, 1872 (Retired)
	Levi Woodbury	Associate Justice	New Hampshire	Joseph Story	January 31, 1846 (Acclamation)	September 23, 1845 – September 4, 1851 (Died)
	Robert Cooper Grier	Associate Justice	Pennsylvania	Henry Baldwin	August 4, 1846 (Acclamation)	August 10, 1846 – January 31, 1870 (Retired)

Hotchkiss v. Greenwood, 52 U.S. (11 How.) 248 (1851), is a Supreme Court decision credited with introducing into United States patent law the concept of non-obviousness as a patentability requirement,^[3] as well as stating the applicable legal standard for determining its presence or absence in a claimed invention.

Under the Judiciary Act of 1789 the federal court structure at the time comprised District Courts, which had general trial jurisdiction; Circuit Courts, which had mixed trial and appellate (from the US District Courts) jurisdiction; and the United States Supreme Court, which had appellate jurisdiction over the federal District and Circuit courts—and for certain issues over state courts. The Supreme Court also had limited original jurisdiction (i.e., in which cases could be filed directly with the Supreme Court without first having been heard by a lower federal or state court). There were one or more federal District Courts and/or Circuit Courts in each state, territory, or other geographical region.

Bluebook citation style is used for case names, citations, and jurisdictions.

• "C.C.D." = United States Circuit Court for the District of . . .
  • e.g.,"C.C.D.N.J." = United States Circuit Court for the District of New Jersey
• "D." = United States District Court for the District of . . .
  • e.g.,"D. Mass." = United States District Court for the District of Massachusetts
• "E." = Eastern; "M." = Middle; "N." = Northern; "S." = Southern; "W." = Western
  • e.g.,"C.C.S.D.N.Y." = United States Circuit Court for the Southern District of New York
  • e.g.,"M.D. Ala." = United States District Court for the Middle District of Alabama
• "Ct. Cl." = United States Court of Claims
• The abbreviation of a state's name alone indicates the highest appellate court in that state's judiciary at the time.
  • e.g.,"Pa." = Supreme Court of Pennsylvania
  • e.g.,"Me." = Supreme Judicial Court of Maine

• Certificate of division

• [1] Case reports in volume 52 (11 How.) from Library of Congress
• [2] Case reports in volume 52 (11 How.) from Court Listener
• [3] Case reports in volume 52 (11 How.) from the Caselaw Access Project of Harvard Law School
• [4] Case reports in volume 52 (11 How.) from Google Scholar
• [5] Case reports in volume 52 (11 How.) from Justia
• [6] Case reports in volume 52 (11 How.) from Open Jurist
• Website of the United States Supreme Court
• United States Courts website about the Supreme Court
• National Archives, Records of the Supreme Court of the United States
• American Bar Association, How Does the Supreme Court Work?
• The Supreme Court Historical Society