ROCK HILL, South Carolina – January 29, 2010 – 3D Systems Corporation (NASDAQ: TDSC), a leading provider of 3-D Printing, Rapid Prototyping and Manufacturing parts and systems solutions, announced that the German Federal Supreme Court has issued a final decision revoking the German part of DSM Desotech’s European Patent No. 0 830 928. DSM had filed a complaint in Germany in 2005 claiming that 3D Systems’ Accura® BluestoneTM stereolithography material infringed this German patent. Following DSM’s appeal of prior decisions, the German Federal Supreme Court issued its decision invalidating this patent on January 28, 2010. As a result of this decision, a related 2005 decision that DSM obtained in an infringement action before the Frankfurt District Court should be dismissed based upon this complete revocation of DSM’s patent. “3D Systems is very pleased with this decision,” said Abe Reichental, 3D Systems’ president and chief executive officer. “As we have said before, we respect the valid intellectual property rights of others. The German Federal Supreme Court’s decision to revoke this patent is consistent with our long-held position that DSM’s patent was invalid.”

Accura® BluestoneTM stereolithography material is an engineered nanocomposite resin offered globally for use in 3D Systems’ SLA® systems that include the ViperTM, iProTM 8000, iProTM 8000 MP, iProTM 9000, and iProTM 9000 XL. Our Accura® BluestoneTM material, with its high stiffness and stability, is widely used by Formula 1 race teams to produce scale wind-tunnel models. The material is available for purchase directly from 3D Systems, and customers can order parts made with Accura® BluestoneTM material through 3D Systems’ Rapid Prototyping and Manufacturing parts service, 3DpropartsTM, at

Forward-Looking Statements

Certain statements made in this release that are not statements of historical or current facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of the company to be materially different from historical results or from any future results expressed or implied by such forward-looking statements. In addition to statements that explicitly describe such risks and uncertainties, readers are urged to consider statements in the conditional or future tenses or that include terms such as “believes,” “belief,” “expects,” “estimates,” “intends,” “anticipates” or “plans” to be uncertain and forward-looking. Forward-looking statements may include comments as to the company’s beliefs and expectations as to future events and trends affecting its business and are necessarily subject to uncertainties, many of which are outside the control of the company. The factors described under the headings “Forward-Looking Statements,” “Cautionary Statements and Risk Factors,” and “Risk Factors” in the company’s periodic filings with the Securities and Exchange Commission, as well as other factors, could cause actual results to differ materially from those reflected or predicted in forward-looking statements.

About 3D Systems Corporation

3D Systems is a leading provider of 3-D Printing, Rapid Prototyping and Manufacturing systems and parts solutions. Its expertly integrated solutions reduce the time and cost of designing products and facilitate direct and indirect manufacturing by creating actual parts directly from digital input.

These solutions are used for design communication and prototyping as well as for production of functional end-use parts: Our customers Create With Confidence.

More information on the company is available at,,,,,, or via email at [email protected].

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