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DuPont Sues Heraeus, SolarWorld for Patent Infringement

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

Stock News for Du Pont E I De Nem (DD)
DateTimeHeadline
04/24/201517:03:34Additional Proxy Soliciting Materials - Non-management (definitive...
04/24/201514:19:25Additional Proxy Soliciting Materials - Non-management (definitive...
04/23/201521:17:20Higher Prices Fail to Salvage Profits
04/23/201517:16:56Additional Proxy Soliciting Materials (definitive) (defa14a)
04/23/201513:06:03Subscribers: DuPont 1Q Earnings Already Reported
04/23/201510:45:38Current Report Filing (8-k)
04/23/201509:01:00The Chemours Company Announces Launch of Senior Notes Offering
04/23/201508:12:44Additional Proxy Soliciting Materials (definitive) (defa14a)
04/23/201508:07:00DuPont Sends Letter to Shareholders Highlighting Company's First...
04/23/201508:01:56Additional Proxy Soliciting Materials (definitive) (defa14a)
04/23/201503:22:53E I Du Pont De Nemours And Given New $69.00 Price Target at RBC...
04/22/201509:22:06Deutsche Bank Lowers E I Du Pont De Nemours And Price Target...
04/22/201507:29:50Bank of New York Mellon Results Top Expectations
04/21/201516:58:24MARKET SNAPSHOT: U.S. Stocks Close Mostly Lower After Barrage...
04/21/201513:30:24DuPont Sees Sales Slide as Proxy Fight Looms -- 3rd Update
04/21/201513:25:24U.S. Stocks Fall on Mixed Earnings
04/21/201512:36:35MARKET SNAPSHOT: S&P 500, Dow Erase Gains After Barrage Of Earnings
04/21/201510:20:44MARKET SNAPSHOT: U.S. Stocks Mixed After Earnings, Merger News
04/21/201508:48:15U.S. Stock Futures Rise, Buoyed by Strong Earnings Reports
04/21/201508:38:34DuPont Forecasts Larger Foreign Exchange Hit as Sales Slip...

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