per se unreasonableness
Defined in 1 dictionary — Case Law
Definitions from Case Law
From 356 U.S. 1 - Northern Pacific Railway Co. v. United States · 1958Most cited · 4,219 citing opinions
There are certain agreements or practices which because of their pernicious effect on competition and lack of any redeeming virtue are conclusively presumed to be unreasonable and therefore illegal without elaborate inquiry as to the precise harm they have caused or the business excuse for their use.