DuPont sues Hutchinson over flame barrier used on planes
Chemicals company DuPont has brought legal action against aerospace firm Hutchinson over alleged infringement of two of its patented flame-retardant materials used in aviation.
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18 April 2019 The US Court of Appeals for the Federal Circuit has upheld a ruling in favour of DuPont, after a district court found that competitor Unifrax had infringed one of DuPont’s patents.