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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
07/28/201608:30:00Dow Chemical Profit Tops Views
07/28/201608:17:00Dow Chemical Profit Tops Views
07/28/201606:50:00DuPont Declares Third Quarter Dividend
07/26/201612:59:55Quarterly Report (10-q)
07/26/201611:58:00DuPont Says Merger With Dow Still on Track as Profit Rises...
07/26/201607:20:00DuPont Profit Beats as Costs Decline
07/26/201607:09:00DuPont Profit Beats as Costs Decline
07/26/201606:31:01Current Report Filing (8-k)
07/26/201606:00:00DuPont Reports Second-Quarter 2016 Results
07/20/201615:40:00Dow, DuPont Merger Wins Shareholder Approvals -- 2nd Update
07/20/201614:45:43Current Report Filing (8-k)
07/20/201613:47:00Dow, DuPont Merger Wins Shareholder Approvals -- Update
07/20/201612:20:00Dow, DuPont Merger Wins Shareholder Approvals
07/20/201612:07:00Dow, DuPont Merger Wins Shareholder Approvals
07/20/201610:26:00Dow and DuPont Stockholders Approve Merger
07/19/201614:32:00Monsanto Rejects Bayer's Sweetened Merger Offer--Update
07/19/201609:46:00Monsanto Rejects Bayer's Sweetened Merger Offer--Update
07/19/201609:00:00Monsanto Rebuffs Bayer's Sweetened Merger Offer
07/19/201608:48:00Monsanto Rebuffs Bayer's Sweetened Merger Offer
07/19/201605:59:00Companies Forgot About Mom-and-Pop Investors...Until Now

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