"Letter to editor" in Iowa on the PATENT Act

In a letter to the editor captioned It’s time to change the game that is patent trolling, Matthew Mitchell, West Des Moines manages to cite the following sources:

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$1.33 million is the cost of the average troll settlement paid by a small or medium company (Collen V. Chien, Santa Clara University )
$1.75 million is the cost of the average in-court patent defense case paid by a small or medium company (Chien)
$80 billion is the total amount trolls directly and indirectly cost operating companies in 2011 (Boston University study )


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Mr. Mitchell might want to consult the following:

**As to the work of Prof. Chien:

http://ipbiz.blogspot.com/2015/04/colleen-chien-and-patent-assertion.html

http://ipbiz.blogspot.com/2015/04/katznelsons-federal-information-quality.html


**As to the work of Bessen and Meurer of Boston University:

http://ipbiz.blogspot.com/2014/12/joff-wild-takes-on-james-bessen-and.html

http://ipbiz.blogspot.com/2008/03/on-bessenmeurer-book.html

http://ipbiz.blogspot.com/2015/04/boston-university-position-on.html