Healthcare Industry News:  Diomed 

Devices Litigation

 News Release - October 3, 2007

Diomed Comments on Summary Judgment Rulings in VNUS Patent Infringement Lawsuit

ANDOVER, Mass.--(HSMN NewsFeed)--Diomed Holdings, Inc. (AMEX: DIO ), a leading developer and marketer of minimally invasive medical technologies, including its patented EndoVenous Laser Treatment (EVLTŪ) for varicose veins, announced that on October 2, 2007 U.S. District Judge Maxine M. Chesney of the U. S. District Court for the Northern District of California, issued an order relating to several motions for summary judgment in the patent infringement lawsuit by VNUS Medical Technologies, Inc. ("VNUS") against Diomed and its co-defendants, AngioDynamics, Inc. and Vascular Solutions, Inc.

The Court expressly deferred its ruling on a motion for summary judgment made by Diomed's and co-defendants that two of the VNUS patents-in-suit, the "tumescent" patents, are invalid over the prior art. The Court ordered VNUS to submit a supplemental brief by October 19, 2007 relating to the defendants' motion.

"We are encouraged that the Judge is closely scrutinizing the validity of the two tumescent patents," stated James A. Wylie, President & CEO of Diomed. "We continue to believe we have a compelling argument for invalidity of these patents."

The Court denied the remaining summary judgment motions made by Diomed, its co-defendants and VNUS, on the grounds that disputed issues of fact required resolution by jury in the upcoming trial. Trial in this case is scheduled to begin on October 29, 2007, and is expected to last approximately three weeks.

About Diomed

Diomed develops and commercializes minimal and micro-invasive medical procedures that use its proprietary laser technologies and disposable products. Diomed's EVLTŪ laser vein ablation procedure is used in varicose vein treatments. Diomed also provides photodynamic therapy (PDT) for use in cancer treatments, and dental and general surgical applications. The EVLTŪ procedure and the Company's related products were cleared by the United States FDA in January of 2002. Along with lasers and single-use procedure kits for its EVLTŪ laser vein treatment, the Company provides its customers with state of the art physician training and practice development support. Additional information is available on the Company's website:

EVLTŪ is a registered trademark of Diomed Inc., Andover, MA.

Safe Harbor

Safe Harbor statements under the Private Securities Litigation Reform Act of 1995: Statements in this news release looking forward in time involve risks and uncertainties, including the risks associated with trends in the products markets, reliance on third party distributors in various countries outside the United States, reoccurring orders under OEM contracts, market acceptance risks, technical development risks and other risk factors. These statements relate to our future plans, objectives, expectations and intentions. These statements may be identified by the use of words such as "may," "will," "should," "potential," "expects," "anticipates," "intends," "plans," "believes" and similar expressions. These statements are based on our current beliefs, expectations and assumptions and are subject to a number of risks and uncertainties. Our actual results could differ materially from those discussed in these statements. Our 2006 Annual Report on Form SEC 10-KSB (the "Annual Report") contains a discussion of certain of the risks and uncertainties that affect our business. We refer you to the "Risk Factors" on pages 19 through 34 of the Annual Report for a discussion of certain risks, including those relating to our business as a medical device company without a significant operating record and with operating losses, our risks relating to our commercialization of our current and future products and applications and risks relating to our common stock and its market value. Diomed disclaims any obligation or duty to update or correct any of its forward-looking statements.

Source: Diomed Holdings

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