Computer Graphics in Court:The Adobe/Quantel Case R i c h a r d L. Phillips I l L Phillips C o n s u l t i n g Inc. The Adobe/Quantel case that Dick Phillips discusses below is especially interesting and some of the landmark paint programs he ment/0ns are being demonstrated in the "70s equipment exhibit an the SIGGRAPH 9B show floor. - - Carl Machover painting and compositing. For those who are interested, the patent names and numbers are cited below, but I'll shortly summarize the relevant aspects of the patents. Before I jump into details, it's important to know that the date of issue of a patent is not necessarily pertinent in determining whether there was relevant prior art, i.e. somebody thought of the idea earlier and the patent should never have been issued.What's important here is that Quantel first received equivalent British patents, and a reciprocity agreement observed by most major countries endows the U.S, patent with a priority date equal to the dare of filing in the U.K.Thus, the priority date is December 4, 1980 for the two earliest patents in this case. That means only w o r k that was
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Computer graphics in court: the Adobe/Quantel case
Phillips, Richard L.
Follow ACM SIGGRAPH Computer Graphics
, Volume 32 (3)
Association for Computing Machinery – Aug 1, 1998
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