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13 August 2024NewsPatentsMarisa Woutersen

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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More on this story

Patents
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
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.