<img src="http://tctechcrunch.files.wordpress.com/2011/01/screen-shot-2011-01-24-at-2-15-06-pm1.png" />"Defensive patent aggregator"<a href="http://rpx.com">RPX</a> (Rational Patent) filed an <a href=
<img src="https://techcrunch.com/wp-content/uploads/2009/07/rpx-logo-1.png" width="211" height="74" />
<a href="http://www.rpxcorp.com/">Defense Play RPX,</a> a defensive patent aggregator, has raise
<img src="https://techcrunch.com/wp-content/uploads/2008/11/rpx-logo.png" />
Patent litigation is getting so bad that a new startup, <a href="http://www.rpxcorp.com/index.html">RPX Corp.</a> (aka, Ra