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Who We Are?

Blackstone Law is a legal firm of industry veterans with experience in employment law, personal injury/wrongful death, and business litigation. Since 2008, our founder, Jonathan Genish, has had the singular goal of serving his clients by generating excellent results. Mr. Genish oversees each and every case personally and carefully selects his cases to ensure proper and individualized attention is given to every client without compromise.

After you’ve selected your legal partner, your attorney becomes intimately involved in your life, and often in situations that are painful or sensitive in nature. You want someone who will conduct themselves with honesty and integrity while representing your best interests and keep you informed as your case makes its way through the system.

We are known for our aggressive and persistent approach to every case. Our clients are more than numbers, they are people that are facing terrible circumstances, and we are here to stand alongside them while navigating their case through the legal system. We believe that everyone deserves the strongest legal representation possible, regardless of what they can afford to pay. As a result, we take all employment and personal injury cases on contingency.

Jonathan Genish


Jonathan M. Genish is an award-winning trial attorney who has represented the full gamut of clients from A-list celebrities to Fortune 500 companies to small businesses and individuals over his productive career.  Super Lawyers has repeatedly honored Mr. Genish as a Southern California Rising Star since 2012, placing him in the top 2.5% of lawyers in Southern California in his peer group.  Mr. Genish has successfully tried numerous multimillion-dollar matters and has represented clients in cases totaling hundreds of millions of dollars.  Mr. Genish has argued matters in various State and Federal Courts across the country, as well as the California Court of Appeals.  Over his many years of experience, Mr. Genish has developed a reputation for aggressive, relentless and creative advocacy.

Prior to founding Blackstone Law, Mr. Genish worked at different high-end boutique litigation firms in Los Angeles.  Mr. Genish received his Juris Doctorate from Cardozo School of Law in New York City, and a Bachelor of Science with honors in both Real Estate and Finance from California State University of Northridge.

He is a father to three beautiful children.  A true family man to his core, Mr. Genish has a sense of compassion and empathy for his clients that truly sets him apart from his contemporaries.

Michael N. Jones


Formerly an academic whose publications include both literary and legal scholarship, Mr. Jones is a seasoned litigator.  Having worked at big law and boutique firms, he has represented major corporations, small and mid-market businesses, and individuals in litigation and appeals in both federal and state court on both the plaintiff and defense sides.

His experience runs the gamut: from high-stakes securities litigation involving fortune 500 companies; to helping to resolve a dispute between the former managers of actor James Franco, which was covered extensively by the entertainment trades; to helping litigate a potential seven-figure class action involving a private security firm in Iraq; to pro bono work, which includes obtaining the rare reversal on appeal of an improperly issued restraining order.

At his previous firm, Stris & Maher, Mr. Jones also co-authored winning U.S. Supreme Court briefs in Merrill Lynch v. Manning (No. 14-1132), Limelight Networks v. Akamai Technologies (No. 15-993), and Dollar General v. Mississippi Band of Choctaw Indians (No. 13-1496).

Balliol College, Oxford: B.A., First Class Honors, English Language and Literature – Stanford University: Ph.D, English Literature – Berkeley Law School: Juris Doctorate

Matthew W. Dietz


Mr. Dietz has aggressively litigated civil cases in California for over a decade.  He has represented government agencies in high-profile employment law, general liability and civil rights matters, including representing some of the largest school districts in California.  His prior experience includes working at one of the largest firms in the U.S., as well as a highly respected litigation boutique, where he represented the full gamut of businesses from Fortune 500 companies to mom-and-pop shops in employment and business litigation matters in state and federal court and administrative bodies.  Over the course of his career, Mr. Dietz has overseen multiple multi-million dollar settlements and achieved numerous judgments for his clients via motion practice, arbitration and trial.

Having years of prior experience representing employers, Mr. Dietz brings a unique perspective and knowledge to his practice now exclusively representing employees.  In joining Blackstone Law, Mr. Dietz has returned to what brought him to the law in first place, a desire to achieve justice for employees who were aggrieved by their employers.

Mr. Dietz received his Juris Doctorate from Washington University School of Law (ranked 18th in the nation) and a Bachelor of Science from Cornell University’s School of Industrial and Labor Relations.  He is married to an attorney and has two daughters.

Kevin Vaz


Kevin graduated from University of Southern California, Gould School of Law, where he earned a Master of Laws (LL.M.) along with a certificate in Business Laws. During this time,  Kevin volunteered his time at Bet Tzedek Legal Services, a pro-bono legal aid organization.  Post-graduation,  Kevin secured a coveted clerkship with Hon. Mary T. House (ret.) at the Los Angeles Superior Court where he extensively worked on Probate, Wills and Trusts and other family law cases.  He was responsible for evaluating and analyzing pleadings,  motions and also drafted bench memos to assist the Court.

With international experience and an expertise in settlement negotiations, Kevin was awarded a Certificate of Appreciation on two occasions,  from the Motor Accidents Claim Tribunal for recording the highest number of successful settlements in Mumbai, India.  Kevin’s prior experience includes Criminal Defense,  Media and Entertainment,  Bankruptcy,  Insurance Defense,  Product Liability and Proposition 65 law. When not at work, Kevin likes to unwind with a novel or the Economist, cooking and playing soccer.  He is also an avid fan of Manchester United F.C. and USC Trojans Football.

Mona Marquez


Mona Marquez has more than 13 years of extensive experience in the field of personal injury.  Prior to joining Blackstone Law, she was the senior negotiator and office administrator for over ten years with a law firm specializing in personal injury, workers compensation and social security.  Mona’s relentless approach in negotiations has led injured clients to millions of dollars in their pockets.  Mona has helped navigate hundreds of clients through the complex social security system to obtain benefits they were wrongfully denied.

She has a passion for helping people through difficult situations and truly believes with hard work, determination and the perfect strategy, anything is obtainable. Mona graduated magna cum laude from California State University of Dominguez Hills where she received her Master of Arts in Negotiation and Conflict Management.  Mona also earned her Bachelor of Science with honors in Criminal Justice from California State University of Long Beach.

During graduate school, her quest to learn led her to the completion of the Dispute Resolution Training Program at the Los Angeles City’s Attorney’s Office, earning a certification in Mediation.  Thrilled to put those skills to good use, Mona taught peer mediation to middle school students to assist them in resolving campus conflicts.  Mona is proud to be the mother of a U.S. Marine and a world class, all-star cheerleader whose team is ranked 3rd in the U.S. and 6th in the world.

Mario Castellanos


Mario graduated with honors and several awards from El Camino College with an AA and Certification in Paralegal Studies and an AA-T in Philosophy. He is currently attending UCLA and will be graduating with a BA in Philosophy.

Mario has passionately and zealously helped attorneys represent plaintiffs in the Personal Injury and Employment sector since graduating from El Camino College. His fervent pursuit for justice leads him to represent clients with unparalleled intensity, passion, and diligence.  When not working or studying, Mario enjoys exercising his creativity writing music on the guitar and drums, but only after he’s tuckered out his Corgi-Chihuaha mix, Tobias, with plenty of play time.

Victor Velasquez


Victor is the Intake Specialist at Blackstone Law.  He is currently attending the University of Phoenix in order to obtain his bachelor’s degree in business administration, with an emphasis in human resource management.  Victor is fluent in both English and Spanish, which is allows him to better serve our clients.  When not at work, he can be found roaming Disneyland or enjoying a newly discovered mystery novel with his iced coffee.

Karen Ramirez


Karen is our wonderful bilingual legal and executive assistant. Karen has a palpable passion for helping others and has devoted her career to fighting for those who deserve justice. A true team player, Karen is an incredibly integral part of the Blackstone Law family.

Born and raised in Los Angeles, during the baseball season you can find Karen along with her family, enjoying a Dodger dog and rooting for……. you guessed it right, the Dodgers.

Mireya Luna


Mireya was born and raised in Long Beach, California. After completing her bachelor’s degree in psychology at Grand Canyon University, she obtained two prior internships in law firms in Los Angeles. She now works as a claim’s management assistant at Blackstone Law. As an assistant she has the crucial role of communicating with clients and handling the medical treatment process. She is bilingual in both English and Spanish. Mireya looks forward to spending each day helping clients obtain the treatment they need throughout this process.

Selin Hartoun


Selin has over nine years in the legal field, and specializes in client relations and case management. Selin treats every client with empathy and compassion and infects the office with her contagious smile and positive attitude.  Selin earned a bachelor’s degree in Business Administration, and is currently enrolled in a master’s program in the same field.  She is a perfectionist to the core and a natural leader.  When she’s not fighting for clients, she indulges her passion for dancing.

David Perez


David plays a crucial role as a Legal Assistant at Blackstone Law.  A true renaissance man, David manages client files, regularly interacts with medical facilities and assists with implementation of the many back-office tasks upon which each case relies.  David earned a bachelor’s degree in Biology with honors.  David’s big heart and strong passion manifest in various ways, always going above and beyond for clients and the team.