Mackall, Crounse & Moore, PLC has joined Dewitt Ross & Stevens S.C.

The newly formed DeWitt Mackall Crounse & Moore S.C. will provide clients with enhanced legal services
and efficiencies as well as access to more than 100 attorneys practicing in nearly 30 areas of
law in Wisconsin and Minnesota.

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Erin E. Block

Metro Milwaukee
Abigail Loeper

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Erin practices as an Associate with the Intellectual Property group at DeWitt. She assists partners and clients with all facets of Intellectual Property law, particularly patent and trademark prosecution. In this capacity, Erin helps to prepare domestic and international patent applications and handle the prosecution of those applications through to issuance.

Erin also assists clients in patent licensing, trademark evaluation, patent infringement litigation, design patent prosecution and intellectual property research. She specializes in the software and computer engineering fields.

Prior to and during law school, Erin worked for many years as a paralegal and office manager. She also had a summer externship at the United States Patent and Trademark Office in Alexandria, Virginia, where she was involved with patent examination and worked in the Commissioner’s Office in the Department of Innovation Development.


  • Wisconsin Intellectual Property Law Association
  • Milwaukee Young Lawyers Association
  • Eastern District of Wisconsin Bar Association

Articles & Presentations

  • The End of the “Wild West” for Software Patents — Does the Patents Act 2013 Change New Zealand’s Treatment of Software Patents from Permissive to Restrictive? 19 MARQ. INTELL. PROP. L. REV. 141 (2015)
  • Growing the Distance, Inventor’s Eye (August 2014), available at
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    Minneapolis, MN 55402
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    DeWitt Ross & Stevens S.C., including its affiliate DeWitt Mackall Crounse & Moore S.C., is one of the ten largest law firms based in Wisconsin, with an additional presence in Minnesota. It has nearly140 attorneys practicing in Madison, Metropolitan Milwaukee and Minneapolis in over 30 legal practice areas, and has the experience to service clients of all scopes and sizes.

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    Best Lawyers 2013 - 2016
    Compass Award 2012
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