U.S. International Trade Commission Votes to Investigate Unlawful Importation of Ace-K Sweeteners from China Alleged to Infringe Celanese Patent


Celanese Corporation (NYSE: CE), a global technology and specialty
materials company, today announced that the U.S. International Trade
Commission (USITC) has voted to institute an investigation into the
unlawful importation into the United States of certain high-potency
sweeteners, specifically Acesulfame Potassium (Ace-K), in response to
the company’s recently filed complaint with the Commission.

The investigation centers on alleged violations of section 337 of the
U.S. Tariff Act of 1930 in the importation into the United States of
high-potency sweeteners that are alleged to infringe U.S. Patent No.
9,024,016, owned by Celanese.

Celanese contends a number of Ace-K manufacturers have unlawfully
introduced sweeteners made via Celanese’s patented technology from China
into the United States market.

In the investigation, the Commission will consider a general exclusion
order barring the importation of all infringing sweeteners.

Celanese continuously invests in manufacturing and quality improvements
and is dedicated to robust research, development and customer support
for the sweetener products manufactured by its patented process. The
company intends to protect these investments to supply customers with
quality engineered products, and intends to vigorously defend its
patented technology against unlawful importation and uses in the United

Further details of this action by the USITC to initiate an investigation
can be found here: https://www.usitc.gov/press_room/news_release/2016/er1122ll689.htm

About Celanese

Celanese Corporation is a global technology leader in the production
of differentiated chemistry solutions and specialty materials used in
most major industries and consumer applications. Our two complementary
business cores, Acetyl Chain and Materials Solutions, use the full
breadth of Celanese’s global chemistry, technology and business
expertise to create value for our customers and the corporation. As we
partner with our customers to solve their most critical business needs,
we strive to make a positive impact on our communities and the world
through The Celanese Foundation. Based in Dallas, Celanese employs
approximately 7,000 employees worldwide and had 2015 net sales of $5.7
billion. For more information about Celanese and our product offerings,
or our blog at

All registered trademarks are owned by Celanese International
Corporation or its affiliates.

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Celanese Corporation
Investor Relations
Varshney, +1 972-443-3078
Relations – Global

W. Travis Jacobsen, +1 972-443-3750
Relations Asia (Shanghai)

Helen Zhang, +86 21 3861 9279
Relations Europe (Germany)

Jens Kurth, +49(0)69 45009 1574

Source: Celanese Corporation