definiens: hts " shall mean all subject matter claimed in the following : ( a ) The United States patent Numbers 5,145,681 and 5.505,943, and United States Patent Application Serial number 867731, filed June 2, 1997, and any continuations, continuations - in - part, divisions and substitutions of any of such patent and patent applications and all renewals, reissues and extensions of any such patent ; and 1 C:\MY DOCUMENl'S\11IERAP\BURNS\V OPTION MODIFJED CF 1 - 00363336 ( b ) Any foreign patents and/or applications that are counterparts of a patent described in subparagraph ( a ) abo ~ e, including any patent or application that claims subject matter claimed in, or that takes priority from, a patent described in subparagraph ( a ) above