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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
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...
08/27/201417:45:53DuPont Reaches $1.28 Million Settlement Over Toxic Gas Leaks
08/25/201421:30:17Judge Overturns GMO Crop Curbs in Hawaii
08/21/201413:40:10DuPont Files Patent Infringement Lawsuit Against SunEdison
07/22/201409:09:55MARKET SNAPSHOT: U.S. Stocks: Futures Gain On Inflation Data
07/22/201408:12:35MARKET SNAPSHOT: U.S. Stocks: Futures Rise Ahead Of Inflation...
04/17/201410:16:19MARKET SNAPSHOT: U.S. Stocks Lower Amid Mixed Earnings
04/17/201406:56:15DuPont Profit Tumbles Despite Growth
04/13/201408:46:33MARKET SNAPSHOT: Google, Intel, IBM Outlooks To Trump Earnings...
04/03/201411:13:07Court Tosses $920 Million DuPont Award Over Kevlar Trade Secrets...
03/04/201417:38:12EU Expected to Issue Antitrust Complaint Over Honeywell/DuPont...
03/02/201406:18:18MARKET SNAPSHOT: Jobs, Winter Weather To Test Record Stock Levels

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