This recent RPX[1] report tells retailers what you likely already knew anecdotally – NPE cases are back. Patent litigation filings in the first half of 2015 are close to 2013 levels. As you are likely aware, this is in stark contrast to the large drops in 2014 filings.

The 2014 drop was largely explained

Along with Covered Business Method patent review (“CBM”) and Post-Grant Review (“PGR”) to a much lesser degree, Inter Partes Review (“IPR”) has become a powerful tool for retailers fighting patent trolls.  One of the key benefits of IPRs is that courts routinely, although not always, stay district court litigation pending the IPR’s outcome.  But earlier