\IfSubStringInString{Firma1}{\lxcompany}{\newcommand{\identpath}{firma1}}{
\IfSubStringInString{Firma2}{\lxcompany}{\newcommand{\identpath}{firma2}}
{\newcommand{\identpath}{firma}} % sonst
\IfSubStringInString{Firma1}{\lxcompany}{\newcommand{\identpath}{firma1}}{
\IfSubStringInString{Firma2}{\lxcompany}{\newcommand{\identpath}{firma2}}
{\newcommand{\identpath}{firma}} % sonst