If you have US patent numbers, you can get the related European patents either from either http://ep.espacenet.com http://ep.espacenet.com or http://www.patentl

If you have US patent numbers, you can get the related European patents either from either http://ep.espacenet.com http://ep.espacenet.com or http://www.patentlens.net http://www.patentlens.net. For example, http://www.patentlens.net/patentlens/patents.html?patnums=US_6990453#tab_3 http://www.patentlens.net/patentlens/patents.html?patnums=US... shows related patents for one of the two US patents mentioned.