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    UPDATE 2-US charges South Korea's Kolon with trade secrets theft

    * Company stole confidential information from DuPont,

    Teijin-prosecutor

    * DOJ charges improperly extend Dupont monopoly-Kolon lawyer

    WASHINGTON, Oct 18 (Reuters) - A U.S. grand jury charged

    South Korea-based Kolon Industries Inc with criminal

    trade theft in a long-running dispute over how the company

    produced high-strength fiber, according to an indictment

    unsealed on T hur sday.

    Kolon and five company executives face charges that they

    stole trade secrets belonging to DuPont Co, maker of

    Kevlar fabric used in body armor and other products, and to

    Japan's Teijin Ltd, maker of Twaron, a rival fabric.

    The United States threatens to take at least $226 million in

    assets from Kolon, which represents the gross proceeds of the

    company's sales of its fabric, Heracron, according to the

    indictment.

    "Kolon is accused of engaging in a massive industrial

    espionage campaign that allowed it to bring Heracron quickly to

    the market and compete directly with Kevlar," said Neil

    MacBride, the chief U.S. prosecutor in the Eastern District of

    Virginia, in a statement.

    The indictment, dated Aug. 21, was filed in U.S. District

    Court in Richmond, Virginia. DuPont developed Kevlar in

    Richmond, according to the indictment.

    Kolon said it will vigorously defend itself against the

    charges from the U.S. Justice Department. The company said the

    fabric technology is four decades old and beyond the protection

    of DuPont's patents.

    "It is disturbing that the DOJ would bring charges that

    effectively assist DuPont in improperly extending its monopoly,"

    Kolon lawyer Jeff Randall said in a statement.

    The company and the executives also face a charge that they

    obstructed the U.S. government's investigation.

    Randall said there are "significant questions as to what DOJ

    now seeks to accomplish," given that Kolon and DuPont have

    already been fighting over their products in court. The Justice

    Department began its investigation in 2007 and opted not to

    prosecute, Randall said.

    In a civil lawsuit, a federal jury in 2011 ordered Kolon to

    pay DuPont $920 million in damages based on similar accusations.

    Kolon is appealing.

    A judge in August barred Kolon from making its version of

    the synthetic fiber for 20 years, but a federal appeals court

    later said Kolon can continue while it pursues appeals.

    A court hearing in the criminal case has been scheduled for

    Dec. 11.

    The case is United States v. Kolon Industries Inc, et al,

    U.S. District Court for the Eastern District of Virginia, No.

    3:12-00137.