Celanese Files Patent Infringement Complaint with U.S. International Trade Commission Seeking Exclusion of Certain High-Potency Sweeteners


Unlawful importation of Ace-K sweetener from China violates Celanese

Celanese Corporation (NYSE: CE), a global technology and specialty
materials company, today announced it has filed a complaint with the
United States International Trade Commission (ITC) in Washington, D.C.,
seeking an investigation of the unlawful importation into the United
States of artificial sweetener Acesulfame Potassium (Ace-K) products
that infringe upon United States 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. These manufacturers have been notified of
their infringement of the asserted patent by the filing of this
complaint with the ITC.

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.

Celanese intends to protect these investments to support customers with
quality engineered products, and the company intends to vigorously
defend its patented technology against unlawful importation and uses in
the United States.

Further details of today’s filing will be available in the coming days
on ITC’s website at www.usitc.gov
and in the Federal Register at www.federalregister.gov.

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.

Forward-Looking Statements

This release may contain “forward-looking statements,” which include
information concerning the company’s plans, objectives, goals,
strategies, future revenues or performance, capital expenditures,
financing needs and other information that is not historical
information. When used in this release, the words “outlook,” “forecast,”
“estimates,” “expects,” “anticipates,” “projects,” “plans,” “intends,”
“believes,” and variations of such words or similar expressions are
intended to identify forward-looking statements. All forward-looking
statements are based upon current expectations and beliefs and various
assumptions. There can be no assurance that the company or its customers
will realize these benefits or that these expectations will prove
correct. There are a number of risks and uncertainties that could cause
actual results to differ materially from the forward-looking statements
contained in this release. Numerous factors, many of which are beyond
the company’s control, could cause actual results to differ materially
from those expressed as forward-looking statements. Other risk factors
include those that are discussed in the company’s filings with the
Securities and Exchange Commission. Any forward-looking statement speaks
only as of the date on which it is made, and the company undertakes no
obligation to update any forward-looking statements to reflect events or
circumstances after the date on which it is made or to reflect the
occurrence of anticipated or unanticipated events or circumstances.

Celanese Corporation
Investor Relations
Kyrish, +1-972-443-4574
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