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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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.
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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