- Spousal SupportIn addition, Karz coedited a procedural manual for the State of California for determining controlling child and spousal support orders when conflicting orders from different states or countries exist. Working at different times for two of California’s largest counties, Karz litigated thousands of interstate and international support enforcement cases.
- Criminal Defense
- Sex CrimesHe has handled high profile cases, such as the so-called "Texas Condom-Rape" case, where his efforts led to reform of the grand jury system by using professional counselors to educate grand jurors about rape trauma and responses. This led to the successful prosecution of his client's rapist and ultimately to a civil suit recovery against the landlord for failure to have properly working sliding glass door latches.
- Fraud
- Assault
- Wrongful TerminationThe firm’s East Coast office primarily handles Qui Tam cases representing whistle-blowers helping to recover taxpayer money lost through fraudulent health care or other reimbursement schemes, as well as wrongful termination and business litigation cases. The Austin and Atlanta offices focus primarily on catastrophic injuries from malpractice, negligence, and defective products, damage to humans or the environment from chemicals, pollution, plastics, and other man-made contaminants as well as emerging liability areas including misuse of data and the invasion of privacy by internet-based social media and marketers.
- Premises LiabilityHis work and cases contributed to groundbreaking medical publications and presentations on uterine hyper-stimulation, the effects of mechanical forces on brain blood flow dynamics, the nature and frequency of vacuum extractor brain injuries, and the use of demonstrative evidence combining photos, MRI scans and graphics to show the mechanism of injury in a birth injury case. In addition to his substantial and often precedent-setting birth injury work, Mark has handled a wide variety of cases including those involving chemical and radiation exposures, business fraud, insurance bad faith, electrocutions due to faulty products, deaths and injuries from unsafe industrial and household products, deceptive trade practices, Native American land rights, premises liability for rapes and assaults from poor security or defective locks, doors, or windows and sexual misconduct against religious orders, therapists and counselors.
- Personal InjuryHe began his private law practice in Orange and Houston, Texas, with his good friend and law school mock trial teammate, Dennis Powell, who is now a state district judge in Orange. Their practice consisted mainly of criminal defense and general personal injury cases. After leaving the partnership, Mark began to concentrate on personal injury matters, specifically medical malpractice cases. He eventually developed a national reputation for obtaining high settlement values and winning verdicts in complex and challenging birth injury cases in a wide variety of venues throughout Texas and other states.
- Medical Malpractice