In
the
case,
filed
Wednesday
in
federal
court
in
Oregon,
where
the
US
unit
of
German
PV
maker
SolarWorld
is
based,
DuPont
alleges
that
Heraeus
and
SolarWorld
have
infringed
on
its
patent
for
a
frontside
silver
photovoltaic
paste
--
US
Patent
8,158,504,
issued
17
April,
according
to
DuPont's
complaint.
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
Materials…
