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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
01/29/201519:51:02DuPont to Cut Bonuses, Delay Raises For This Year
01/27/201513:27:34DuPont Warns of Currency Headwinds -- 3rd Update
01/27/201513:12:29Procter & Gamble's Revenue Declines on Currency Hits -- Update
01/27/201513:07:58DuPont Warns of Currency Headwinds -- 2nd Update
01/27/201513:02:22DuPont Warns of Currency Headwinds -- Update
01/27/201513:02:07DuPont Warns of Currency Headwinds
01/26/201515:32:10Proxy Battle Puts Focus on DuPont Earnings
01/22/201519:45:10Icahn Stirs Activist Pot on Possible Takeovers
01/12/201519:20:44DuPont to Sell Theater Business After Trian Criticism -- Update
01/12/201519:16:06DuPont to Sell Theater Business Amid Criticism From Activists
01/09/201516:48:09U.S. Stocks Slide, Capping Rocky Week
01/09/201516:45:53Peltz Targets DuPont Spinoff's Governance
01/09/201516:45:41U.S. Stocks Fall Despite Stronger-Than-Expected Jobs Report
01/09/201516:41:13U.S. Stocks Extend Losses
01/09/201516:38:54U.S. Stocks Slide
01/09/201516:32:39U.S. Stock Futures Rise After Strong Jobs Report
01/08/201521:08:11Trian Seeks Four Seats on DuPont's Board--2nd update
01/08/201519:41:09Trian Seeks Four Seats on DuPont's Board--update
12/18/201418:07:21DuPont Names Planned Performance Chemicals Spinoff
12/04/201400:00:03Barington Wants Omnova to Break Up

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