There have been several long and expensive legal disputes on important resu
lts of industrial R&D. These disputes are often very destructive for all pa
rties involved; the lawsuits are very expensive, market development for new
products suffers from the uncertainty of uninterrupted supply, and the par
ties involved are often forced to publish technological and trade secrets,
thereby helping third parties. This article analyses the R&D, starting shor
tly after World War II, that led to high strength/high tenacity aramid fibe
rs in the 1970s and 80s. The development of these fibers led to an enormous
patent litigation case between the chemical giants Du Pont (US) and AKZO (
Europe). This paper will show that industrial research and development, esp
ecially pioneering research, is not so straightforward as is supposed in in
ternational patent law: often research findings cannot be covered easily an
d effectively with patents; "inventions" are often the result of research f
indings in various laboratories. Competitors can often improve on the produ
ct or the process, and thereby claim patent licenses. Therefore, patent rig
hts are in practice more or less a matter of negotiation while the legal si
tuation is often rather unclear. This paper will briefly describe how, amon
gst others, Du Pont, Monsanto, AKZO, and the Soviet VNIIV and VNIISV instit
utes contributed to the creation of various high performance aramid fibers.
It will also describe how the patent litigation struggle between AKZO and
Du Pont started, and will finally evaluate this battle of giants, which cos
t the parties about US$200 million only for lawyers, and probably a multipl
e of that amount to cover other expenses. (C) 1999 Elsevier Science Ltd. Al
l rights reserved.