Sour turn for Celanese as Fed Circ backs Chinese firm over artificial sweetener patents

Federal Circuit confirms ITC’s ruling that patents for the artificial sweetener Ace-K are invalid | Decision, which cites the US ‘on-sale bar’ principle, highlights that patents cannot be granted for inventions sold before the filing date.

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Patents

Celanese sues Chinese rival over patent for artificial sweetener ‘200% sweeter than sugar’

16 October 2019 Global chemical company Celanese has taken legal action against a Chinese manufacturer of high-potency sweeteners that is allegedly infringing one of its patents.

Patents

ITC to investigate high-potency sweeteners

28 November 2016 The US International Trade Commission (ITC) has voted to investigate whether high-potency sweeteners from China infringe patents owned by Celanese, a specialty materials company.

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Sour turn for Celanese as Fed Circ backs Chinese firm over artificial sweetener patents

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