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Philip N. Petersen

Western Washington State DUI defense attorney

Petersen & Su PLLP

15 S. Grady Way
Suite 230
Renton, WA 98057

Phone: 253-336-6384

Website: phils.law

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About Philip N. Petersen

Serving the western Washington area for over 20 years, my firm primarily handles DUI defense, criminal defense, and other traffic related cases.

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NCDD Journal

Find the latest news and announcements in our journal.

FROM OUR BLOG

Interview With an Amicus

06/27/2025

Written by Michelle L. Behan Amicus Curiae (Latin for "Friend of the Court") refers to a brief that is filed by an interested, non-party to the matter under consideration. This is often done in cases where organizations and entities wish to provide the reviewing court with their point of view, be it social or public policy implications, or special interest agendas....

Keeping FSTs Out of a Trial

04/23/2025

Written by Neil Halttunen I want to address a common issue that DWI practitioners are facing, trying to keep FSTs out of a trial. One way is to take the position that FSTs are scientific evidence and make the prosecutor lay scientific foundation which they rarely can do. The HGN test was the result of several studies. See Generally Session 8 of...

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Members of the NCDD not only demonstrate that they are qualified DUI defense attorneys, but they have access to valuable information and resources. We provide access to documentation blood alcohol testing devices and scientific articles related to alcohol, drugs, driving, and testing.

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