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was declared invalid in 1990.

In 1996, IMPRA was purchased by Bard and Bard was thereby able to reenter the market. In 2002, IMPRA vascular graft patent was issued, and Bard sued Gore for infringing it.

In 2006, Robert W. Gore was inducted into the U.S. National Inventors Hall of Fame for his invention.

In 2015, Gore was ordered by the Federal Circuit Court of Appeals to pay Bard $1 billion in damages. The U.S. Supreme Court declined to review the Federal

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