DuPont Sues Heraeus, SolarWorld for Patent Infringement

Date : 06/21/2012 @ 9:53AM
Source : Dow Jones News
Stock : E.I. DU Pont de Nemours And Company (DD)
Quote : 77.85  0.46 (0.59%) @ 4:02PM

DuPont Sues Heraeus, SolarWorld for Patent Infringement

DU Pont E I DE Nem (NYSE:DD)
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   By Victoria Stilwell 
 

DuPont Co. (DD) filed a lawsuit in Oregon against Heraeus Materials Technology LLC and its customer, SolarWorld Industries America Inc., alleging the two companies infringed on a patent recently issued to DuPont related to solar cell technology.

DuPont claims Heraeus and SolarWorld violated the diversified U.S. manufacturer's patent on front-side metallization paste materials by making, selling or using Heraeus's front-side silver pastes.

The lawsuit follows a continuing patent infringement suit DuPont filed against Heraeus in September, also related to the solar cell technology materials. In that case, DuPont alleged Heraeus's H94XX series and H92XX series front-side silver pastes infringe DuPont's Solamet photovoltaic metallization paste, thick film materials used in the construction of both crystalline silicon and thin film solar cells.

DuPont has received a boost from higher pricing in recent quarters, offsetting raw material expenses. DuPont reported in April its first-quarter profit rose 4% as the company benefited from higher pricing and a jump in sales of agricultural products, as well as strong growth in developing markets.

Shares of DuPont closed Wednesday at $51.04 and were inactive in premarket trade. The stock is up 11% so far this year.

Write to Victoria Stilwell at Victoria.Stilwell@dowjones.com

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