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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
11/13/201400:31:12Agricultural Firms, Farm Groups Strike Deal on Crop Data
10/28/201414:49:21U.S. Stocks Trade Higher
10/28/201413:26:11DuPont Earnings Rise But So Do Headwinds -- 2ndUpdate
10/28/201409:57:24DuPont Earnings Rise But So Do Headwinds -- Update
10/28/201409:14:36MARKET SNAPSHOT: U.S. Stocks: Futures Trim Gains After Durable-goods...
10/28/201408:31:17MARKET SNAPSHOT: U.S. Stocks: Futures Up On European Gains, Hopes...
10/28/201406:32:21MARKET SNAPSHOT: U.S. Stocks: Futures Up On European Gains, Hopes...
10/26/201418:29:07Correction to DuPont Earnings Preview
10/26/201405:18:37MARKET SNAPSHOT: Energy, Health Care Earnings To Dominate Week
10/24/201418:06:05DuPont Earnings, Revenue Seen Rising in 3Q -- Earnings Preview
10/21/201417:19:27EU Charges Honeywell, DuPont in Refrigerant Case
09/17/201419:58:21MARKET SNAPSHOT: U.S. Stocks Gain; Dow Closes At Record High
09/17/201419:52:40MARKET SNAPSHOT: U.S. Stocks Extend Gains On Fed Decision
09/17/201419:38:51MARKET SNAPSHOT: U.S. Stocks Rise Ahead Of Fed Statement
09/17/201419:33:21MARKET SNAPSHOT: U.S. Stocks: Futures Swing Higher After CPI
09/17/201418:21:30MARKET SNAPSHOT: U.S. Stocks: Futures Flat As Fed Day Arrives
09/03/201419:09:29Atlantic Richfield, DuPont to Pay $26 Million in Cleanup Settlement
09/03/201419:00:54Atlantic Richfield, DuPont Agree to Pay $26 Million in Cleanup...
08/28/201414:03:29U.S. Hot Stocks: Hot Stocks to Watch
08/27/201417:47:33DuPont Reaches $1.28 Million Settlement Over Toxic Gas Leaks...

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