\thispagestyle{empty}
\pagenumbering{gobble}

\setlength\oddsidemargin{\dimexpr(\paperwidth-\textwidth)/2 - 1in\relax}
\setlength\evensidemargin{\oddsidemargin}

\makeatletter
\begin{changemargin}{-15mm}{-5mm}
    \noindent%
    \vspace*{-20mm}%
    \begin{center}%
        \includegraphics[keepaspectratio, height=8mm, trim={0 8mm 0 0}]{\@UniversityLogo}%
        \hfill%
        {\Large\bf \@Firstname\, \MakeUppercase{\@Lastname}}%
        \hfill%
        \includegraphics[keepaspectratio, height=8mm, trim={0 8mm 0 0}]{\ifdefempty{\@LaboLogo}{\@DoctoralSchoolLogo}{\@LaboLogo}}%
    \end{center}%
\end{changemargin}\vspace*{1cm}%

\begin{changemargin}{-10mm}{0mm}
    \begin{center}
        {\LARGE\bf \@TitreThese}%
    \end{center}
    \begin{mybox}
        {\Large\textbf{Résumé}}\vspace*{5mm}
    
        \@resume
        
        \vspace*{5mm}
        \textbf{Mots-clés}: \@motscles
    \end{mybox}\vspace*{5mm}
    
    \begin{center}
        {\LARGE\bf \@ThesisTitle}%
    \end{center}
    \begin{mybox}
        {\Large\textbf{Abstract}}\vspace*{5mm}
        
        \@abstract
        
        \vspace*{5mm}
        \textbf{Keywords}: \@keywords
    \end{mybox}
\end{changemargin}
\makeatother

% go back to default geometry settings
\setlength\oddsidemargin{\defaultOddsidemargin}
\setlength\evensidemargin{\defaultEvensidemargin}