I think this article (in which mainstream economists prove themselves the most "disruptive" of all) also makes that point very well

'supporters of free market like private property, and patents and copyright are intellectual “property”. Hence, strengthening them is ideologically and politically consistent with the general principle that “private property is good for growth” ... [But patents are] not a “property” right but rather a “monopoly” right'

http://research.stlouisfed.org/wp/2012/2012-035.pdf