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• v  declare invalid
• v  make invalid for use
• v  show to be invalid
• v  take away the legal force of or render ineffective
• s  deprived of legal force

• How did his now invalidated stem-cell paper get into a major scientific journal? How did such serious flaws go undetected for months? And could he have knowingly taken such foolish .
• In a 1973 decision that was never appealed, he invalidated Eckert and Mauchly's patents and in effect declared Atanasoff the winner.
• But the justices also restored the parental rights of Whitehead- Gould, which the trial judge had terminated, and invalidated last year's adoption of Melissa by Elizabeth Stern.

• invalidate
• annul
• quash
• void
• avoid
• nullify
• cancel
• vitiate
• nullified

• validate

News & Articles

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• Court Lifts Prop 8 Stay, Letting Weddings Commence Immediately
  The Ninth Circuit has formally cleared the way for same-sex marriages, dissolving its stay of a lower court ruling that invalidated Prop 8.
  June 29, 2013 - Law.com
• California same-sex marriage resumes
  Federal court lifts order that had had invalidated Proposition 8, letting gays tie the knot.
  June 28, 2013 - U-T San Diego
• Teachers' group wants high-stakes test results invalidated
  The Oklahoma Education Association is calling for 2013 standardized tests to be invalidated after multiple computer snafus disrupted the April testing period.
  June 26, 2013 - Tulsa World

Quotes

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• Jerry Brown in CNN
  Proposition 8 must be invalidated because the amendment process cannot be used to extinguish fundamental constitutional rights without compelling justification,Brown said in a written statement.
• Sandra Day O Connor in Boston Globe (registration)
  In the case that is before us ...... the lower courts need not have invalidated the law wholesale,O'Connor wrote. "Only a few applications of New Hampshire's parental notification statute would present a constitutional problem."
• Yar Adua in Africasia
  If the vote is invalidated, I'll step down immediately,Yar'Adua told AFP.