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William Lee Buus

Litigation Attorney at Brea, CA

5.0   10 reviews
Virtual consultation available
Virtual consultation available
  • Licensed for 28 years
    State CA
    Acquired 1995
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About William

Learn William’s areas of practice.

Practice areas
  1. Litigation
    General business litigation representation for both plaintiff and defendant

    29 years, 550 cases

  2. Securities and investment fraud
    Securities litigation involving securities purchases/sales and shareholder suits

    23 years, 100 cases

  3. Trademark infringement
    Litigation representation for both plaintiff and defendant

    23 years, 100 cases

  4. Patent infringement
    Litigation representation for both plaintiff and defendant

    23 years, 50 cases

William is a trial lawyer who has handled a wide variety of business litigation cases in state and federal court, as well as before various administrative agencies. He has also argued before federal and state courts of appeal. Among others, he has handled cases involving wrongdoing between/among business owners, trademark infringement, patent infringement, copyright infringement, unfair competition, misappropriation of trade secrets, breach of contract, fraud and false claims, breach of fiduciary duties, wage and hour violations, wrongful termination, misconduct in the offer of sales and sales of securities, wrongoing by broker-dealers before FINRA (formerly NASD), real estate disputes, and insurance-related disputes. His cases have been the subject of news media reports, including major newspapers and television. 

He is currently an associate of the American Board of Trial Advocates (ABOTA), a prestigious association of jury trial attorneys.

Because of his litigation successes, from 2009 to the present, William has been named as a "Super Lawyer"  in Southern California Super Lawyers Magazine, having been recognized by his peers as one of the top lawyers in Southern California. He has also received the highest rating of “10” on AVVO since 2009, and has been recognized four times by OC Metro Magazine as one of Orange County’s top lawyers.

William has authored several articles on law practice for the Los Angeles Daily Journal, including articles on proving damages as well as getting and keeping the jury's attention. He was also on the staff of Southwestern University School of Law’s law review, and was invited to join Southwestern’s moot court honors program. William has also passed the Uniform Certified Public Accountant Examination in 1991.


Buus Law Group APC


5.0 / 5.0
  10 customer reviews
5 Star
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1 Star
Posted by Wendy-Ann | September 10, 2009
Bill Buus, giving Attys a wonderful reputation!
Bill was our lifesaver in a TM dispute. I honestly do not know what we would have done without him. We would have lost our life's work. In court he was aggressive but not egotistical. At no time was it about him, it was always about us. He helped us get through our depositions and didn’t hold back when he knew I was starting to fold under the pressure. He reassured me and kept me strong while being deposed. With his help, I made it through! Bill is an honorable man and for two people who trusted no one, we knew that Bill Buus was indeed someone we could always trust. We still retain him as our Atty. and really thank God for Bill saving our livelihood! We are so ever indebted to him.
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Posted by Nik | September 9, 2009
Practical, Real and full of Integrity!
Bill has handled many legal issues for me over the many years I have known him. In most cases, he has figured out a way to AVOID a lawsuit and figuring out my best options. He takes a very practical approach in applying the law to any situation. Although he is a fabulous litigator (as evidenced by his experience and successes), he has been best at giving me good advise when needed, and knowing when to pick a fight or when to exit gracefully.
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Posted by Lilit | March 5, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Best attorney in LA and OC combined
Bill was my attorney for an aribitration I filed and was my second attorney on the case. I live in LA and Bill, who works in OC, was referred to me by another attorney. My case was quite sensitive and no attorney was willing to take it because they simply weren't listening or cared enough. But I knew right away Bill was different from the 8 or 9 previous attorneys I spoke with (including the first one I hired). He is very approachable, trustyworthy, has a great sense of humor and is beyond humble. This man is full of so much wisdom but you wouldn't know until you work with him. He's kind, patient and confident- the best qualities you can ask for in an attorney. Needless to say, we won the case and I truly believe no other attorney would have been capable. I'm grateful beyond words.
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Posted by Hua | April 28, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Very professional
Bill and his team are very professional and always available to answer the questions and concerns.
Posted by Flo | April 27, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Mr. Buus Is Second To None!
Truly a godsend, Bill Buus agreed to take on my Wrongful Termination/Whistleblower Retaliation case approximately a year ago. Since I have been his client, he has shown me the utmost professionalism and a genuine sense of care. His ability to patiently explain legal jargon in laymen terms as well as prepare me for the unknown of the deposition process and when my case goes to trial are greatly appreciated. Bill Buus responds to my emails, texts, and phone calls immediately. I can definitely state in no uncertain terms that had it not been for Mr. Buus being my legal counsel, there is no telling where my life would be right now. I am eternally grateful to this outstanding, knowledgeable, expert, ethical, etc. lawyer for representing me. It is lawyers like Mr. Buus that give the legal profession its honorable name! Thank you Bill for being the BEST lawyer ever!
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Posted by Tom | April 27, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Did a great job.
Bill was a pleasure to work with. He had great command of all the case information. His tact was aggressive yet attainable. I would hire him again.
Posted by Anthony | April 27, 2017
This review is from a person who hired this attorney.
| Hired Attorney
The Best Attorney in OC
Bill, not only was great in defending my company and I through legal battles, he also was a power house when it came to letter writing with legal complaints. In addition, he more than knew his facts and details when it came to battling with opposing counsels. I would recommend Bill Buus and his Ferm to anyone for any reason.
Posted by Melanie | July 13, 2014
Mr. Bill Buus is respectful of your needs and concerns…and has the smarts to win!
Mr. Buss is not only very professional, but a good listener and describes cases and situations to his clients in an easy to understand, truthful manner. A quick thinking, confident litigator, articulate and well prepared. Respectful of your needs and concerns. He is there to win and fight for you. He is not in it for the money. He was successful in getting a mediation so that our expenses would not be overwhelming - where other attorneys would rather take it to court. He is a winner in our HOA (Homeowners Association) case! And we were winners because we had such an outstanding, knowledgeable attorney - Bill Buus. Thank you!.
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Posted by anonymous | February 26, 2013
W. Buus Review
My husband and I plus another couple required an attorney to represent us as plaintiff's in a lawsuit with our homeowners' association. We retained Bill Buus and are very happy for our decision. Bill always presents the risks plainly to us. He's helped guide us through the long and arduous process of suing a group and continues to guide us. He has led us artfully down the legal path of what is possible and what is not. Since this concerns something as personal as home, neighborhood, neighbors and community, Bill has skillfully dealt with our emotions. Bill Buus has made a very difficult process bearable.
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Posted by Angelina | September 9, 2009
Marselle / Buus review
Mr. Buus is an amazing attorney. He's representing a group of us in a "mass-action" lawsuit. Over the last 12 months in working with him, Mr. Buus has been very accomodating to all our needs, communicative (explaining step-by-step the progression of the case), and has a way about him that makes us all have a sense that he's taking good care of us. Even though he is extremely busy, he has always returned my phone call the same day. That to me is very important, which is why I will continue to use him as my attorney. I have also found Mr. Buus to be knowledgeable in many areas of law, which, again, gives me the comfort in knowing that I have an excellent attorney representing me.
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Contact for Details


AVVO RATING 10.0 (Superb)

Work Experience

  • Principal
  • Buus Law Group APC
  • 2022 - Present
  • Shareholder
  • Schiffer & Buus APC
  • 2010 - 2022
  • Shareholder
  • Buus Kim Kuo & Tran APC
  • 2006 - 2010
  • Partner
  • Oswald & Yap APC
  • 2001 - 2006
  • Associate
  • Ness & Associates
  • 1996 - 2000
View all work experience


  • Southwestern Law School
  • JD - Juris Doctor
  • 1995
  • California State University, Long Beach
  • BA - Bachelor of Arts
  • 1991

Sample of Legal Cases

  • Barsegyan v. Torabian
  • FINRA arbitration award for the client/claimant
  • Boulter v. Boulter
  • Judgment for the defense.
  • Quoc Viet Inc. v. VV Foods
  • Jury Verdict for Plaintiff
View all legal cases


  • Orange County Bar Association
  • Master Lawyers Division Member
  • 2020 - Present
  • American Board of Trial Advocates (Orange County chapter)
  • Associate
  • 2012 - Present
  • Orange County Bar Association
  • Member
  • 2011 - Present

Honors and Awards

  • Super Lawyer
  • Super Lawyers Magazine
  • 2022
  • AV Preeminent Rated
  • Martindale-Hubbell
  • 2022
  • AV Pre-eminent
  • Martindale-Hubbell®
  • 2015
  • Top Orange County Lawyer
  • OC Metro Magazine
  • 2014
  • Rising Star
  • Super Lawyer Magazine
  • 2006
View all awards


  • Business Connection (Irvine Chamber of Commerce)
  • Tips to Avoid Lawsuits
  • 2006
  • The Gavel (OCTLA)
  • Proving Actual Damages in Real Estate Non-Disclosure Actions
  • 2005
  • Los Angeles Daily Journal
  • Lawyers Should Encourage Jurors to Question Witnesses
  • 2004
  • Los Angeles Daily Journal
  • Proving Loss of Profits is Daunting But Manageable
  • 2004
  • Los Angeles Daily Journal
  • Plan Carefully to Discover Who Controls Corporation
  • 2004
  • Los Angeles Daily Journal
  • Get Expert Help to Decide on Recoverable Damages
  • 2004
  • Common Assessment Magazine
  • Reduce Sidewalk Liability with a Maintenance Plan
  • 1998
View all publications

Speaking Engagements

  • Principals of the Carmack Amendment
  • Camack Amendment to the Interstate Commerce Act
  • 2000

Attorney endorsements

Received (10)
Given (9)
Endorse William
Litigation Attorney | May 01
Relationship: Worked together on matter
"I have known Bill more than 15 years, and worked with him on a number of cases during this time. Bill is an excellent trial attorney and I highly recommend him."
Litigation Attorney | Sep 22
Relationship: Opposing Counsel on matter
"I endorse this lawyer. William Buss is a hardworking gifted trial lawyer. He has strong skills and experience"
Intellectual property Attorney | Jun 23
Relationship: Co-worker
"Bill is one of the finest lawyers I know. Bill is detail-oriented, intelligent, and understands client expectations. He is the person I always call when I need to consult on a case. I am proud to call him my law partner, and even prouder to call him my friend."
Litigation Attorney | Sep 22
Relationship: Worked together on matter
"I endorse this lawyer's work. Bill is a highly skilled legal strategist and litgator. I have worked with him on complex patent litigation cases and have the highest regard for his legal judgment."
Litigation Attorney | Sep 10
Relationship: Co-worker
"I endorse this lawyer's work. He is hard working, intelligent and honest."
Litigation Attorney | Sep 09
Relationship: Co-worker
"I first met Bill when he was defending a co-defendant in a complex civil litigation case. I've then had the fortune to work with him at a boutique Irvine firm. Finally, I am proud to be able to call him a partner/shareholder in our current firm. Bill is a brilliant legal strategist and a trusted partner. I would fully entrust all of my legal affairs to Bill."
Litigation Attorney | Sep 09
Relationship: Co-worker
"I highly endorse the litigation work of Mr. William L. Buus in the areas of intellectual property, business disputes, securities fraud and general civil litigation. Bill is an excellent trial lawyer who uses his court room experience and knowledge of the law to help his clients obtain outstanding results in litigation. Bill is also very personable, cares for the best interests of his clients and takes the time to explain issues with his clients."
Business Attorney | Sep 04
Relationship: Worked together on matter
"I have known and worked with Mr. Buus for over 20 years and I would recommend him without any hesitation."
Public finance and tax exempt finance Attorney | Aug 31
Relationship: Worked together on matter
"I endorse this lawyer's work."
Litigation Attorney | Aug 27
Relationship: Worked for lawyer
"William Buus is the most talented attorney I've ever met. As my mentor, he taught me everything I know about litigation. His procedural knowledge is impeccable. He is also a kind and caring human being. If I were on death row, he's the only lawyer I would want defending me."
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Lawsuits and disputes
Intellectual property
Patent infringement
Contracts and agreements
Intellectual property
Brea Litigation Lawyer William Lee Buus
William Lee Buus
Litigation Attorney
Brea, CA
Licensed for 28 years
Virtual consultation available