Preemption

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Preemption or pre-emption may refer to:

[edit] Legal

• In any federal system of law, preemption refers generally to the displacement of a lower jurisdiction's laws when they conflict with those of a higher jurisdiction.
  • Federal preemption, displacement of U.S. state law by U.S. Federal law
  • Federal preemption, displacement in the European Union of national law by the Law of the European Union
  • "Preemption" is also sometimes used in the United States to refer to the displacing effect state laws might have on ordinances enacted by municipalities, especially in the context of alcoholic beverage laws, gun laws, and in the area of FDA approved pharmaceuticals.
• Preemption, a type of land transfer in the United States, as in the Preemption Act of 1841
• Preemption Line, the line that divided the Indian lands of western New York State, that had been awarded to New York from those that had been awarded to the Commonwealth of Massachusetts by the Treaty of Hartford of 1786
• Pre-emption rights, the right of existing shareholders in a company to buy shares offered for sale before they are offered to the public
• FDA Preemption, legal theory in the United States that exempts product manufacturers from tort claims regarding Food and Drug Administration approved products
• Pre-emption (Dominion Land Survey), option given to immigrant settlers to Western Canada to purchase the adjacent quarter section to their homestead for $2.00 an acre according to the 1872 Dominion Lands Act.^[1]

[edit] Other

• Preempt, a type of bid and a bidding tactic in contract bridge
• Preemption (computing), ability of an operating system to stop a currently scheduled task in favour of a higher priority task
• Preemption (media), the replacement of all or part of a regularly scheduled broadcast with a television special or breaking news
• "Preemption", a form of broadcasting blackout
• Preemptive war

[edit] References

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