DuPont has filed a lawsuit against Heraeus Holding GmbH and Heraeus Materials Technology, LLC for allegedly infringing a DuPont patent related to its front-side metallization paste materials used in solar cell technology.

In its federal court filing, DuPont alleged that Heraeus has infringed DuPont U.S. Patent No. 7,767,254 B2, by manufacturing solar cells and inducing its customers to manufacture solar cells, using Heraeus H94XX series and H92XX series front-side silver pastes.

"As a market-driven science company, DuPont invests significant resources and millions of dollars in research to develop innovative products for our customers," said David B. Miller, president, DuPont Electronics & Communications.  "Our intellectual property enables us to continue investing in innovative technologies for the photovoltaic industry, and to ensure that our customers receive the performance expected from DuPont products.  We will continue to take appropriate actions to protect our patent estate against infringement."