Jury Rules in Glycoproducts International, Inc. Patent Case

(RIGGINS, Idaho) May 27, 2008 - Glycoproducts International, Inc., a provider of nutritional supplement products, today announced that a federal court jury sitting in the Northern District of Texas returned a mixed verdict relating to claims that Glycoproducts International, Inc. committed patent infringement of two of Mannatech, Incorporated’s (Nasdaq: MTEX) patents relating to Mannatech’s AMBROTOSE® technology.

The jury ruled in favor of Glycoproducts International, Inc., finding that they were innocent of patent infringement of Mannatech’s U.S. Patent No. 6,929,807, the parent patent upon which the lawsuit against Glycoproducts International, Inc. was originally based. However, in regard to Mannatech’s continuation patent of the parent patent, U.S. Patent No. 7,157,431, which was issued and first claimed to be infringed by Mannatech after the lawsuit was filed, the jury found that Glycoproducts International, Inc. had committed patent infringement.

The jury ruled in favor of Mannatech on its claims of infringement of the AMBROTOSE® trademark. Since Glycoproducts International, Inc. successfully defended its position against Mannatech’s‘807’ parent patent, it will oppose Mannatech’s request for an injunction to prohibit Glycoproducts International, Inc. from further production, distribution and sale of its Glycomannan® product.

The verdict was delivered on Friday, May 9, 2008, in the United States District Court for the Northern District of Texas, Dallas Division, following testimony before Federal Magistrate Jeff Kaplan. Glycoproducts International, Inc. (formerly Glycobiotics International, Inc.) was represented by Attorney William G. Shaw, Jr., of Collins, Basinger & Pullman, P.C.

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