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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
07/01/201506:00:00DuPont Completes Spin-off of The Chemours Company
06/29/201516:20:00DuPont Rings Closing Bell at New York Stock Exchange Marking...
06/24/201507:28:00Columbia Pipeline to Join the S&P 500; Other Changes to S&P MidCap...
06/22/201516:06:28Annual Report of Employee Stock Plans (11-k)
06/22/201516:03:25Annual Report of Employee Stock Plans (11-k)
06/22/201515:58:37Annual Report of Employee Stock Plans (11-k)
06/19/201508:00:00DuPont Announces "When-Issued" Trading of The Chemours Company...
06/17/201517:40:00DuPont Announces Effectiveness of The Chemours Company Form 10...
06/16/201515:25:53Statement of Changes in Beneficial Ownership (4)
06/16/201515:24:47Statement of Changes in Beneficial Ownership (4)
06/16/201515:23:54Statement of Changes in Beneficial Ownership (4)
06/16/201515:23:01Statement of Changes in Beneficial Ownership (4)
06/16/201515:21:39Statement of Changes in Beneficial Ownership (4)
06/16/201515:21:11Statement of Changes in Beneficial Ownership (4)
06/16/201515:20:14Statement of Changes in Beneficial Ownership (4)
06/16/201515:19:17Statement of Changes in Beneficial Ownership (4)
06/16/201515:18:49Statement of Changes in Beneficial Ownership (4)
06/16/201515:17:22Statement of Changes in Beneficial Ownership (4)
06/16/201515:16:44Statement of Changes in Beneficial Ownership (4)
06/16/201515:15:51Statement of Changes in Beneficial Ownership (4)

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