Dr. Miles Medical Co. v. John D. Park & Sons Co.
Supreme Court of the United States
Argued January 4–5, 1911 Decided April 3, 1911
Full case name	Dr. Miles Medical Co. v. John D. Park & Sons Co.
Docket no.	72
Citations	220 U.S. 373 (more)
Holding
Vertical price restraints are illegal per se.
Court membership
Chief Justice Edward D. White Associate Justices John M. Harlan · Joseph McKenna Oliver W. Holmes Jr. · William R. Day Horace H. Lurton · Charles E. Hughes Willis Van Devanter · Joseph R. Lamar
Case opinions
Majority	Hughes, joined by White, Harlan, McKenna, Day, Van Devanter, Lamar
Dissent	Holmes
Lurton took no part in the consideration or decision of the case.
Laws applied
Sherman Antitrust Act
Overruled by
Leegin Creative Leather Products, Inc. v. PSKS, Inc.

Dr. Miles Medical Co. v. John D. Park & Sons Co., (220 U.S. 373) (1911),^[1] was a United States Supreme Court case on anti-trust grounds that ruled that resale price maintenance, a form of vertical restraint, is illegal per se.^[1][2]

The Dr. Miles Medical Co. (Dr. Miles), now Miles Laboratories, was founded in 1884. In an era when most products were snake oil, Dr. Miles invented a patent medicine that had an actually useful, if somewhat toxic, active ingredient: bromides.^[3]

John D. Park & Sons Co. (Park & Sons) was a discount drug reseller that sought to profit off the advertising of Dr. Miles' remedies while selling Dr. Miles products at rock bottom prices. While lower prices drove sales for Park & Sons, it cut into the profits of Dr. Miles. To fix this, Dr. Miles made an agreement with all sellers of its products that they would be required to sell the products at a minimum price.^[3]

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