The Disappearing Rule of Addition (English)
Article by Gerry Peters on the increasing reluctance of the CAFC to interpret nominally open-ended claims (i.e., as signaled by presence of the transition "comprising") as in fact being open to the presence of additional elements.

Practice Tips in Light of Festo and Similar CAFC Cases (mixed Japanese and English)
Slides from talk given by Gerry Peters in 2002 on the subject of patent prosecution tips in light of the Festo case and similar U.S. patent cases that tend to place an increasing burden on the patent practitioner.