A solar cell with DuPont photovoltaic metallization paste. Heraeus Materials Technology believes its products do not infringe on patents issued by DuPont, as the materials giant has alleged in recent lawsuits.
The German provider of solar metallization pastes also calls questions the validity of the patents at issue, noting that certain claims of DuPont's US patents (8,158,504 and 7,767,254) were rejected by authorities in Europe, China and Japan.
"Heraeus believes DuPont?s patent lawsuits seek to achieve through legal means what they cannot achieve through product performance and customer service," the company says in a statement. "Heraeus also believes they are attempting to improperly influence competition in the marketplace by threatening customers and competitors with potential legal action."
DuPont named SolarWorld in its recently filed lawsuit over the '504 patent.
The complaint alleges that Heraeus' H92XX and/or H94XX frontside silver photovoltaic pastes, which it has supplied to SolarWorld for use in the manufacture of PV cells, infringes on at least four claims of the DuPont patent.
Heraeus is unmoved by the complaint.
"We stand behind our innovative products and we will continue to produce our paste products at sites worldwide and supply them to our customers without making misleading statements or threats to our competitors," says Andy London, global manager of Heraeus PV business, in a statement.
Trade stance
Meanwhile, Heraeus has come out against duties sought by SolarWorld and other manufacturers on Chinese PV imports into the US and Europe.
"Heraeus has always supported preserving free trade without protectionist government intervention. In this instance as well, we regard the attempt to impose import duties on solar modules made in China as clearly interfering with the rules of free competition," says Dr. Frank Heinricht, Heraeus Holding chairman, in a statement.
Benjamin RomanoPublished: Friday, August 10 2012
Source: http://www.rechargenews.com/energy/solar/article319696.ece?WT.mc_id=rechargenews_rss
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