<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%">

    <pattern id="patternUserSpace" patternUnits="userSpaceOnUse" patternContentUnits="userSpaceOnUse" x="20" y="20" width="50" height="30">
      <rect x="0" y="0" width="50" height="30" fill="blue" stroke="green"/>
    </pattern>
    
    <rect x="20" y="20" width="100" height="60" fill="url(#patternUserSpace)" stroke="black"/>

</svg>