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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
08/25/201513:38:00DuPont Announces Senior Leadership Changes
08/20/201509:10:00Chemours to Cut Titanium Dioxide Capacity, Close Delaware Plant
08/20/201508:59:00Chemours to Cut Titanium Dioxide Capacity, Close Delaware Plant
08/19/201510:00:00DuPont Names Jeanmarie F. Desmond as Vice President and Controller
08/06/201509:10:27Activist Ackman Takes $5.5 Billion Stake in Snacks Giant Mondelez
08/06/201507:30:04Chemours to Cut $350 Million in Costs
07/31/201515:43:02Statement of Changes in Beneficial Ownership (4)
07/29/201517:20:48Charges Dismissed Against Chinese Woman in Seed-Theft Case
07/29/201517:03:42Charges Dismissed Against Chinese Woman in Seed-Theft Case
07/28/201513:19:50Quarterly Report (10-q)
07/28/201512:42:09DuPont Trims Outlook on Agricultural Weakness -- 4th Update
07/28/201509:16:44DuPont Trims Outlook on Agricultural Weakness -- 3rd Update
07/28/201508:28:12DuPont Trims Outlook on Agricultural Weakness -- 2nd Update
07/28/201508:21:34Current Report Filing (8-k)
07/28/201507:40:31DuPont Trims Outlook on Agricultural Weakness
07/28/201507:10:10DuPont Trims Outlook on Agricultural Weakness -- Update
07/28/201506:58:06DuPont Trims Outlook on Agricultural Weakness
07/28/201506:00:00DuPont Reports 2Q Operating EPS of $1.18
07/27/201509:20:00Technical Data on Agricultural Chemicals Stocks -- E. I. du Pont...
07/23/201506:00:00DuPont Announces Senior Leadership Changes

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