Logo for Latex

\documentclass[a4paper,12pt]{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[swedish]{babel}

\usepackage{graphicx}
\usepackage[T1]{fontenc}
\usepackage{tikz}
\usepackage[charter]{mathdesign}
\usepackage{fancyhdr}
\usepackage[a4paper,margin=1in,,headheight=\baselineskip, headsep=7mm,footskip=13mm]{geometry}

%---------------------------------------------
\fancypagestyle{logo}{
  \fancyhf{}
\fancyhead[L]{}
\fancyhead[R]{
\begin{tikzpicture}[baseline,remember picture,overlay]
\node at ([xshift=3cm,yshift=3cm]current page.north east) {\includegraphics[width=3.5cm]{jedem.pdf}};
\end{tikzpicture}
}
\setlength{\headsep}{1.1in}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
}
%---------------------------------------------

\usepackage{helvet}
\renewcommand{\familydefault}{\sfdefault}

\usepackage{titling}
\pretitle{\begin{flushleft}\LARGE}
\posttitle{\par\end{flushleft}}
\preauthor{\begin{flushleft}\large}
\postauthor{\par\end{flushleft}\vskip 1.5em}
\predate{\begin{flushleft}\large}
\postdate{\par\end{flushleft}\vskip -5em}

\setlength{\parskip}{1.2ex}    % space between paragraphs
\setlength{\parindent}{1em}    % amount of indention
\setlength{\textwidth}{17cm}       % default = 6.5"
\setlength{\oddsidemargin}{-5mm}   % default = 0"
\setlength{\textheight}{225mm}     % default = 9"
\setlength{\topmargin}{-8mm}       % default = 0"

\title{Testing}
\author{Mr Test}
\date{}

\thispagestyle{logo}

\begin{document}

\maketitle

\noindent
{\bf Abstract}

\end{document}