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Attorney bio

Mario A. Bianchi is a business lawyer who represents clients in the adversarial context of business disputes and business litigation. His primary area of emphasis is corporate ownership disputes and business dissolutions (“business divorce”). Mario’s clients are the owners, officers, and/or directors of privately held companies who need a highly skilled business attorney to creatively and aggressively represent them in their business disputes arising out of breach of fiduciary duty, breach of loyalty, minority oppression, conversion, accounting, wage claims, and unjust enrichment.

Mario has worked at Lasher 25 years. He served as the Chair of Lasher’s Litigation Department from 2009-2013, and as the firm’s Managing Principal from 2020-2024.

Education
Notre Dame Law School
Juris Doctor, 2001
Seattle University
Bachelor of Arts in Business Administration, Economics, and Humanities, 1997
Seattle Preparatory School
1993
Mario is the very definition of what an attorney ought to be. He is so supportive and thinks of all the details so that none are missed. I could relax knowing what an organized, consummate professional he is on every level. His communication is clear, thorough, and timely. He's super sharp and proficient at his job and does it all while being kind -- the very best combination! He's an invaluable asset to the team. And THIS (mug) is what you want to see on your lawyer's desk. He IS Superman! I actually call him "Super Mario." I highly recommend his services.
—Julie D. - Google
Mario Bianchi was my lawyer and advocate for over 5 years. Through a multitude of business situations, Mario's guidance, counsel and assistance was critical. Many times he counseled patience and letter writing rather than legal action. He welcomed my input to our corporate input, which led to a strengthened legal position. He also communicated strength and stability as our counsel. If you face a complicated business litigation position, and want a lawyer who has a deep understanding of how these situations play out, Mario is an excellent choice.
—Alan H. - Google
Mario Bianchi is hands down the best business divorce attorney in Seattle. I had an ongoing business dispute with my divorce. I was referred to Mr. Bianchi by my attorney at the time who felt the case was getting too complicated for her scope of practice. If you are a married woman who shares business assets with your husband call Mr. Bianchi. I truly don't know where I would be without his help! I am so grateful that attorneys like Mr. Bianchi exist!
—Lyss B. - Google
Simply the best Litigator in Seattle! With extensive experience and enthusiasm, Mario was exactly the Attorney I needed for my difficult case. He maintains a positive yet controlled attitude, never loses sight of the big picture and gets the job done with a sense of humor! Who can ask for more? I cannot say enough good things about Mario Bianchi - if you need a strong Litigator - this is your man! I am so thankful I found Mario.
—Lee-Ann C. - Google
Mario is a down to earth straight shooter that has values that I believe is lacking in many attorneys today. Mario has a great personality and put the time and dedication into our case that went above and beyond. Mario does his research thoroughly so as not to miss an opportunity or find himself without an answer to anything that arises during the case. Before and during court he is laser focused so as to control the room to keep the other attorneys off balance and trying to keep up. If we were to need an attorney again within Mario’s expertise we would consider nobody else.
—Mark J. - Google
Mario worked on a case for my company this past year and we couldn't have asked for a better attorney. He is thorough, concise, trustworthy, and diligent in his tasks. His professionalism throughout the entire process made a difficult situation manageable every step of the way. I would highly recommend his services to anyone I know.
—Kenton W. - Google
I worked with another partner at the Lasher firm who introduced me to Mario Bianchi, who ended up representing my family on a very complex transaction. We were sued by an aggressive lawyer/investor who hired a strong litigation firm and lawyer who I was told was a legend in this field... well he was no match for Mr. Bianchi. Mario was calm, "right on" the legal aspects, and focused only on what we needed to focus on to carry the day with the Court and the Judge. Litigation is an extremely frustrating endeavor and it tests all your stamina financially and emotionally. Make sure the litigation firm you hire not only knows the high-stakes game you need to expertly play but is ethical and won't take you on a wild goose chase to waste time and precious resources. Wouldn't hesitate for a second to recommend the Lasher firm and their star litigator Mr. Bianchi.
—Anonymous - via AVVO
Mario Is not only easy to speak with he is VERY detailed! He really put my mind at ease and goes though every aspect possible. He lists his direct number as well even though he comes from a decent sized firm! He is point on!
—Anonymous - via AVVO
Mario represented us in a complicated and difficult real estate matter and provided us with excellent legal advice and representation. His consideration was not only about winning the case but for our long term best interests as well. We would strongly recommend him to anyone needing a real estate attorney.
—B&E - via AVVO
Excellent legal mind, technically rigorous and one of the best litigators in Seattle. I worked with another partner at the Lasher firm who introduced me to Mario Bianchi, who ended up representing my family on a very complex transaction. We were sued by an aggressive lawyer/investor who hired a strong litigation firm and lawyer who I was told was a legend in this field... well he was no match for Mr. Bianchi. Mario was calm, "right on" the legal aspects, and focused only on what we needed to focus on to carry the day with the Court and the Judge. Litigation is an extremely frustrating endeavor and it tests all your stamina financially and emotionally. Make sure the litigation firm you hire not only knows the high-stakes game you need to expertly play but is ethical and won't take you on a wild goose chase to waste time and precious resources. Wouldn't hesitate for a second to recommend the Lasher firm and their star litigator Mr. Bianchi.
—Anonymous - via AVVO
Super Lawyer! My family and I recently worked with Mario. We were impressed with his representation in our case against my ex-business partner, who is also my brother. I often make a point to recognize extraordinary talent when I come across it. Mario is an extraordinary talent. Through most of my life, I’ve managed to dodge a great deal of conflicts by either walking away or by bullying my way through my adversaries, using any means available, fair or not. A few years ago, my father passed away. At this time, I decided to make some drastic changes in my life. I decided to be more thoughtful in the ways I treat others and try to lead by example. It’s ironic that while I have made a 180-degree turnaround in my life, I also encountered the greatest betrayal of my life, both personally and professionally. This was unchartered territory for me; in the past, I was often the one doing the perpetrating and not the one being taken advantage of. To make matters worse, I was conned by my brother. I was, therefore, susceptible to one low blow after another. I was dejected and hopeless until coming to the realization that a previous experience in life could help me through these trying times. Indeed, it did. A few years ago, I saw Mario in action when he represented as co-counsel one of my business partners. I was impressed with his work, especially his attention to detail. Mario has an ability to see a case from all angles, like Gary Peyton on the basketball court. If was going to fight the injustice levied against me, I would have to hire the best man for the job: Mario. I considered this case against my brother to be one of the most challenging times in my life. And consider this: I have survived a heart attack and braved the big seas as child boat refugee fleeing communist Vietnam on my way to freedom in the United States. Hell yes, Mario was the right man to hire. Please excuse my language but this is how my family and I feel about the guy. I needed to win the case against my brother; he had already taken so much from me and my family. Thankfully, we did win the case. To quote the late rapper Biggie Smalls: “I don’t have to worry about that, my attorney handled that!” I told Mario I would write him a glowing review, even though he did not ask for one. So here it is. It is fitting my 10-year-old son calls Mario “Super Mario.” If you are dealing with any of life’s legal obstacles that are too important to lose, call Mario. Having he and his team in your corner will give you the best fighting chance. He is worth every penny and then some!
—Todd - via AVVO
Mario is Awesome. Mario was thorough, professional, trustworthy, responsive and tenacious; all the qualities you could want in an attorney. He always gave his best effort and acted in our best interest. I highly recommend him.
—Dave - via AVVO
My experience with Lasher Holzapfel Sperry & Ebberson has been through Mr. Mario Bianchi and his team. He represented me in a lengthy, complicated, and contentious lawsuit brought by my sister over the covenants associated with a territorial view easement and the land transfer restrictions associated with property that has been in my extended family for 107 years. The suit lasted over three years and ended with the judge ruling primarily in my favor. I feel strongly that the favorable court order was due entirely to the expertise and skilled litigation skills as well as wisdom of Mr. Bianchi. He did a fabulous job of representing me and throughout the protracted process maintained the highest ethical standards.
—Anonymous - via Best Lawyers Client Comments