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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Blasiole, Ph.D.
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Daniel A. Blasiole, Ph.D.

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Your patent counsel needs to understand your technology. As a registered patent agent, Dan brings to his practice a detailed understanding of experimental science, focused expertise in a number of biotechnological disciplines and extensive, hands-on research experience.

He conducts nearly all aspects of practice before the United States Patent and Trademark Office, including patent prosecution, requests for reexamination, and appeals before the ​Patent Trial and Appeal Board. In addition, Dan advises on such matters as invalidity opinions, freedom to operate opinions, patentability opinions, licensing agreements, and litigation.

Dan has experience with a number of technologies, including enzymes, antibodies, medical devices, pharmaceutical compounds, cellular reprogramming methods, assays, assay platforms, nutraceutical compositions, disease treatments, nanopositioning systems, chemical manufacturing processes, and mechanical devices, among others.

His practice is informed with his expertise in a number of areas of bioscience, such as biochemistry, cell biology, molecular biology, microbiology, genetics, and genomics. He has researched molecular and cellular mechanisms underlying metabolic disease, particularly the role of certain protein receptors and enzymes in regulating lipid metabolism. He has also contributed to a genetic mapping of mRNA expression and metabolic profiles in an F2 intercross between diabetes-resistant and diabetes-susceptible mouse strains. In addition, he has conducted molecular genetic research on microbial pathogens and developed multiplex real-time PCR viral diagnostic arrays for the U.S. Department of Defense.


Dan works with university technology transfer organizations, individual inventors, and companies ranging from startups to multi-national corporations in securing their patent rights both domestically and internationally and in managing their patent portfolios.

Client Recommendations

“This is really brilliant…. You have won my business.” – CEO and founder of a biotechnology company, regarding a patent application directed to polymerase enzymes.

“I was amazed at how thorough a job you did. I could not really come up with any substantial additions to the information that we have talked about.” – Surgeon and inventor, regarding a patent application directed to a medical device.

“Kudos to the author of the main body. It is well written, so I have very few comments. Actually, I think we should talk about using it as the basis for a review article.” – University professor and inventor, regarding a patent application directed to genetically recombinant microorganisms.

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Get to know us

DeWitt LLP is one of the ten largest law firms based in Wisconsin, with an additional presence in Minnesota. It has more than 130 attorneys practicing in Madison, Greater Milwaukee, Green Bay and Minneapolis in over 30 legal practice areas, and has the experience to service clients of all scopes and sizes.


We are an active and proud member of Lexwork International, an association of mid-sized independent law firms in major cities located throughout the Americas, Europe and Asia and an active member of SCG Legal, an association of more than 140 independent law firms serving businesses in all 50 state capitals and major commercial centers around the world.


Best Lawyers 2013 – 2021
Super Lawyers 2021
Compass Award 2012
Top 100 Lawyers: National Trial Lawyers Association


While we would like to hear from you, we cannot represent you until we know that doing so will not create a conflict of interest. Accordingly, please do not send us any information about any matter that may involve you until you receive a written statement from us that we represent you (an “engagement letter”). You will not be a client of the firm until you receive such an engagement letter.

The best way for you to initiate a possible representation is to call DeWitt LLP at 608-255-8891. We will make every effort to put you in touch with a lawyer suited to handle your matter. When you receive an engagement letter from one of our lawyers, you will be our client and we may exchange information freely.

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