Authors - Writers Expert Witnesses: 28

Tony Mason, PhD, is a computer systems expert witness specializing in software, operating systems, storage, source-code analysis, trade secrets, patent disputes, software defects, digital forensics, and emerging LLM/AI systems.

 He has worked in systems software since the late 1980s, including distributed systems at Stanford, AFS/DCE/DFS at Transarc, and 22 years leading Windows file-system and filter-driver architecture for more than 160 technology companies. He holds a 2025 PhD in Computer Science from UBC, is the primary inventor on 12 issued U.S. patents, and co-authored lex & yacc and Windows NT Device Driver Development.

Dr. Mason has served as a testifying and consulting expert since 2003 in U.S. federal courts, the British Columbia Supreme Court, USPTO/PTAB proceedings, and an international matter. His work has included expert reports, declarations, depositions, Markman-hearing testimony, jury-trial testimony, source-code comparison, software-functionality assessment, and digital-forensics analysis. His testimony in Elmagin Capital LLC v. Chao Chen was cited by name in both the trial-court and Third Circuit decisions; in another trade-secret matter, his methodology survived a Daubert challenge.

Current research focuses on LLM systems reliability and observability.

Areas of Expertise:

• Software
• Programming/Software/Modeling
• Computers Science
• Artificial Intelligence/Machine Learning
• Intellectual Property
• Patent Infringement
• Computer/Digital Forensics
• Electronic Discovery/Evidence
• Data Management/Recover
• Computer Systems
• Computer Security
• Computer Networking
• Cloud Computing/Services

View Dr. Tony Mason's Consulting Profile.

Brent Coker, PhD, is an Online Consumer Psychologist. With a PhD in Electronic Commerce (“Predicting Internet Purchase Intention”), Dr. Coker's research focusses on consumer behavior within the realm of psychology, digital business models, and marketing. He currently teaches Digital Marketing and Digital Business Models at the University of Melbourne.

Dr Coker prepares scientific reports pertaining to consumer behavior, branding, and Digital Marketing and technology related topics, based on scientific findings published in academic peer reviewed journals, and other third party relevant research. Any opinions expressed by Dr Coker are supported by peer reviewed academic research, established academic theory, industry standards, and other relevant logical evidence. 

Dr. Coker’s award winning research into digital marketing and consumer behavior has been published in top peer reviewed academic journals, beginning in 2004 when his research into the integration of the internet into business models won Best Paper Award at the 15th Australasian Conference on Information Systems (ACIS). In the late 1990s, Dr. Coker had a dot-com (fernland.com), and he is currently director of Deloosh Pty Ltd.., inventor of the web analytics tool Webreep., and author of the book Going Viral, and advisor to Wear Cape, Influencer Marketing Agency

 Dr. Coker is available for expert witness work, consultation, and advisement in Australia and internationally.

Areas of Expertise:

View Dr. Brent Coker's Consulting Profile.

Emanuel Kapelsohn is an internationally recognized Firearms Training and Use of Force consultant who has instructed thousands of police and security officers, federal agents and others throughout the U.S. and abroad since 1980. A graduate of Yale University and Harvard Law School, he is a practicing attorney in addition to his consulting work. 

As vice president of the Internat’l Assoc. of Law Enforcement Firearms Instructors, Mr. Kapelsohn is a certified in force science and shooting scene reconstruction, and as an instructor in numerous law enforcement disciplines. He is a featured presenter at national and international instructor conferences. He has authored over 130 published articles, is Associate Editor of "Standards & Practices Guide for Law Enforcement Firearms Instructors," and principal author of "Firearms Training Standards for Law Enforcement Personnel," and "Guidelines for Simulation Training Safety." 

Mr. Kapelsohn testifies as an expert witness in civil and criminal cases in state and federal courts nationwide, and has testified by invitation before both houses of Congress. 

Testimony on the Following Subjects:

View Emanuel Kapelsohn's Consulting Profile.

Susan Maccoy is an actively practicing Cosmetologist and experienced Expert Witness on Beauty Salon and Spa Products, Processes, Procedures, Policies and Standards. With over 45 years of experience, Ms. Maccoy combines an extensive background and foundation of knowledge in cosmetology and salon business and operations with critical and analytical thinking to provide solid, informed support for litigation. She was a salon owner and has been a manager of independent and franchise chain salons. She holds current cosmetology licenses in Illinois and Florida. Ms. Maccoy has assisted the legal profession on issues related to the cosmetology, beauty salon, and spa industries for over 35 years. Her expertise and professional experience encompass the full range of cosmetology products, services, techniques, and salon management. Ms. Maccoy also provides valuable insight for cases involving consumer and employee personal injury, product liability, professional liability including salon/spa customer injury,and allegations of discrimination in the salon and spa. To date,(2022) Ms. Maccoy has been retained by the defendant in approximately 30% of her engagements and by the plaintiff in 70%. In 2011, her investigative work and expert opinions were instrumental in obtaining dismissals with prejudice in two actions, one in state court and one federal. Zoom Conferencing   Available.Areas of Expertise:

• Salon Policies and Procedures
• Cosmetology Standards of Care, Processes, Procedures, Timelines, Workflow Protocols
• Salon / Spa Incidents and Injuries
• Salon / Spa Incident Investigation and Re-Creation - Chemical Formulations and Usage
• Salon Contractual Agreements - Employment, Rental, Salon Rental / Sale, Independent Contractor / Booth Rental
• Certified in Milady Salon Infection Protocols 2020
• Certified Covid 19 Protocols for Salons and Spas 2020 (Barbicide)

In her book, Down the Shampoo Bowl - The ABC's of Hair Salon Management, Ms. Maccoy explains the management and financial side of the beauty business and how to motivate employees, handle difficult clients, and promote business and services through traditional channels and social media. View Consulting Profile.

Timothy A. Dimoff, CPP, founder and president of SACS Consulting & Investigative Services, Inc. a leading security consulting firm, has over 40 years of experience in Law Enforcement and Security matters for both the public and private sectors. He is multi-certified in the security field and is considered one of the nation's leading authorities on negligent security procedures; security & vulnerability issues; police procedures and operations including use of force; high-risk workplace and human resource issues; narcotics investigations and enforcement. 

Mr. Dimoff is board certified by ASIS as a Certified Protection Professional (CPP?) which is internationally recognized as the “gold standard” certification for security management professionals, demonstrating their knowledge and competency in seven key domains of security.

Litigation Support - Mr. Dimoff has over 20 years of experience in testifying and consulting as an expert witness in over 500 cases and trials for both the plaintiff and the defense sides. His expert witness experience includes law enforcement procedures, security negligence of business or physical premises, human resources issues, meeting standards of practice in hiring and termination, employment practices, proper documentation, training, supervision, policies and procedures, harassment, discrimination, internal investigations, threats and excessive use of force.

Mr. Dimoff is a renowned speaker, trainer, and author who has offered expert commentary to national media including Dateline, NBC, CNN, The Chicago Tribune, The New York Times, The LA Times, The Washington Post, and The Wall Street Journal.  He is the author of four books, including How to Recognize Substance Abuse, The YOU in Business, and Life Rage, a chilling examination of societal rage and safeguards against it.

Mr. Dimoff holds a Bachelor of Science Degree in Sociology with an emphasis in Criminology from Denison University.

Areas of Expertise: 

View Timoth A. Dimoff's Consulting Profile.

Ray S. Kim, Ph.D., is a Licensed Clinical Psychologist and Board Certified Forensic Psychologist. Dr. Kim is also a Board Registered Mental Illness / Substance Abuse Provider, Diplomate of the American Psychotherapy Association, Diplomate of the American Board of Psychological Specialties, Fellow of the American College of Forensic Examiners Institute, and Fellow of the American College of Advanced Practice Psychologists. 

Dr. Kim is currently the Director of Chicago Metropolitan Forensic Services at the Illinois Department of Human Services where he supervises a team of clinical psychologists and social workers who evaluate the placement of individuals into forensic facilities. He also serves as the Director of Clinical Training at Chicago Metropolitan Forensic Services where he developed and supervises a forensic practicum program which provides opportunities for specialized clinical training in the area of forensic psychology. 

Litigation Support - Dr. Kim has testified in over 50 cases in both criminal and civil court proceedings. He is sensitive to the nature of legal matters, and provides comprehensive, timely, and professional services. Dr. Kim's services are available to attorneys or defendants seeking a qualified evaluator to help support a case, or wishing to obtain a second opinion on a legal matter already in progress. He is skilled in utilizing the field of psychology's most up-to-date assessments to provide recommendations for prosecution or defense teams. 

Areas of Expertise:

• Psychological Evaluations
• Pre-Sentence Evaluations
• Sex Offender Evaluations
• Violence Risk Assessments
• Competency to Waive Miranda Rights
• Diminished Capacity
• Fitness for Duty Evaluations
• Substance Abuse Assessments
• Independent Medical Examinations (personal injury, workers' compensation, disability determination, malpractice)
• Detection of Malingering
• Federal Evaluations (competency to stand trial, criminal responsibility)

View Dr. Kim's Consulting Profile.

Mike Wakshull is a civil and criminal court-qualified document examiner who partners with legal clients to dissect the evidence presented in handwritten and computer-generated questioned documents. His valid approach often produces winning arguments during the trial. Wakshull applies his scientific training to examine questioned documents which is a court requirement. He uses generally accepted practices such as SWGDOC and ANSI/ASB standards. His laboratory is well-equipped with high powered digital microscopes, VSC80, ESDA, high quality digital scanners, and software. He has built a large forensic reference library. Wakshull is skilled at creating and explaining complex exhibits in easy-to-understand language and pictures. His courtroom approach is to teach and engage the trial participants—opposing attorney, judge and jury.

Mike Wakshull holds a graduate school certificate in Forensic Document Examination. Since 2010 Mr. Wakshull has worked and studied in the science and discipline of Document Examination and Handwriting Analysis. He is one of only a handful of forensic document examiners with graduate school training in the science of forensic document examination. His opinion is always based on sound fundamentals of evidence. Mr. Wakshull has spoken at International and local conferences and seminars and also holds professional certifications that bring unique skills to your case. As a Certified Quality Engineer, Mr. Wakshull studied the science of variability and applied this to the analysis of handwriting and documents. As a Certified Information Systems Auditor, he applies his knowledge of information systems and technology to the analysis of documents.

Q9 Consulting, Inc. Has both an extensive research library and laboratory. Q9 Consulting, Inc. serves Southern California counties of Riverside, San Diego, Orange, San Bernardino, and surrounding regions. Mike has worked cases from 29 states and five countries. Work is accepted from all other locations.

Areas of Expertise:

View Mike Wakshull's Consulting Profile.

Dr. Kanellakopoulos is a technology leader with 25+ years of experience in R&D and engineering management in both academia (former UCLA Professor of Electrical Engineering) and industry, and a seasoned expert witness with a perfect success record.

He has designed and built telecom products such as DSL and Carrier Ethernet hardware and software, as well as a prototype fully automated electric vehicle. He has conducted applied research in adaptive control of nonlinear systems, with applications to automotive driver assistance systems (adaptive cruise control, blind-spot monitoring, vehicle collision avoidance) and active suspensions. He has significant experience with international telecommunication standards (ITU-T SG15/Q4), and has directed collaborative projects with several automotive/truck manufacturers and vendors (Ford, Mercedes-Benz, DaimlerChrysler, Freightliner, Gentex, Visteon).

He has significant experience as an expert witness in patent infringement (including IPR) and product liability cases in the automotive and telecommunication areas; the vast majority of his cases have resulted in a win or a very favorable settlement for his clients. In 2017, he was the lead expert witness in a product liability case against Nissan that resulted in a $25M jury award for his clients; this decision was later upheld on appeal. His deep technical expertise allows him to analyze patents and products in detail, and explain clearly (in expert reports, depositions, and court testimony) the main issues that the judge and jury need to internalize in order to comprehend the essence of the case.  His extensive educational experience allows him to help judges and jurors understand the topic they are dealing with, instead of confusing them with unnecessary technical details.

After all, it takes excellent teaching skills and a deep understanding of a complex technical concept to convey the essence of that concept to non-experts without talking down to them.

View Dr. Kanellakopoulos's Consulting Profile.

Kent C. Sasse, MD, MPH, FACS, FASMBS, is a Board-certified general surgeon in active practice. UCSF general surgery residency; Lahey Clinic colon and rectal surgery fellowship. Over 20,000 gastrointestinal, colorectal, general, and bariatric procedures. Clinical Associate Professor, University of Nevada School of Medicine. Approximately 50 peer-reviewed publications. Medical Director of nationally accredited bariatric surgery center.

Clinical Experience - Bariatric and metabolic surgery, revisional and reoperative procedures, anastomotic and staple-line leak, failure to rescue, hernia repair and mesh and biologic graft performance, hiatal hernia and fundoplication, advanced endoscopy and stenting, colorectal surgery, pelvic floor and incontinence, sacral neuromodulation, complex wound management. Twenty-plus years as medical director of a nationally accredited bariatric center. Inventor and patent holder, bariatric surgical device. 

Nutrition support - Former medical director of a home infusion pharmacy with clinical oversight of home parenteral and enteral nutrition therapy, vascular access, and patient selection. Member, American Society for Parenteral and Enteral Nutrition. Experience with criteria-based medical necessity review. Reviews the nutrition and gastrointestinal components of life care plans, including indications for enteral versus parenteral support, expected trajectory and adaptation after intestinal resection, access complications, and projected duration of therapy 

Litigation Support - Medical negligence, personal injury, and product liability. Over 100 case reviews for the Nevada State Board of Medical Examiners and the U.S. Air Force. 50+ depositions and trial testimonies. Retained by plaintiff and defense in approximately equal measure, and has served as a neutral reviewer. 

Dr. Sasse is a sought after speaker and an experienced trial witness, having logged many hours on the witness stand in highly charged cases. He brings a commitment to objectivity and thoroughness to each and every case. 

Areas of Expertise:

View Dr. Sasse's Consulting Profile.

Dr. Robert Evans, PhD,  is a Licensed School Psychologist with over 30 years of experience in the behavioral sciences, including completing over 100 Child Custody Evaluations. Dr. Evans serves as a consultant to the medical, legal, and law enforcement community in Florida on Psychological and Educational matters. He consulted with Orange County Public Defender with cases involving arrest and incarceration of children, including Competency Assessments and Insanity Determinations. He has also provided Critical Incident Stress Debriefings to victims of crime in the Central Florida area. 

Litigation Support - Dr. Evans specializes in Parental Alienation cases which are commonly among those classified as High Conflict Divorce cases and he has written a book on Parental Alienation. He provides litigation support to counsel for both Plaintiff and Defense. His services include support with hearing / trial preparations, review of current evaluations, and support during and after the litigation process. 

Dr. Evans has given sworn testimony as a Forensic Psychology expert witness in NY, IL, PA, GA, FL, IA, ID, CO, OH, TX, TN, LA, MA, MD, MO, NC, SC, WA, and OR. 

Areas of Expertise:

• Parental Alienation
• Child Custody Evaluations
• False Allegations of Abuse
• Treatment Considerations for Alienated Children

Seth Goldstein, is an attorney representing parents and children in family violence cases for 23 years. His practice uses the successful multi-disciplinary prosecution model bringing to a case the special expertise of various professionals involved. Since 1994, he has been the Executive Director of the Child Abuse Forensic Institute, a non-profit resource and referral organization he created using the same approach handling child abuse based in Monterey, California. When working for the district attorney in Napa County, his program achieved a 96.5% conviction rate, at charging, charging 75% of the cases brought to the program. He currently sits as an advisory board member for the Family Violence Appeals Project, Oakland, California, that has had an amassed an unprecedented 85% success rate in its appeals.

Mr. Goldstein has worked as a consultant for the State of California on the subject of response to domestic violence; the National Counsel of Juvenile and Family Court Judges on family violence, a law enforcement investigator specializing in the investigations of Sexual Assault, Child Physical and Sexual Abuse, and Family Violence for the Berkeley Police Department, the Santa Clara and Napa County District Attorney’s Offices. He has testified as an expert witness in Criminal, Civil, Juvenile Dependency and Family Law courts in California and other states on these subjects. He has written and been published on the topics of family violence and child abuse in various national journals, publications. His book on investigating child sexual abuse by Seth Goldstein is in its second edition.

Expertise: Analysis and testimony on the dynamics of child sexual abuse and domestic violence. Consultation and assistance in search for evidence, preparing for and executing trial strategies.

Experience: 41 years working in the field of interpersonal violence, child abuse, and domestic violence as frontline investigator, district attorney investigator, Project Director of Child Abuse Prosecution Program, expert witness, consultant and attorney in same fields.

Education/Training: Police Academy, 1973; Minor in Psychology/Sociology, SFSU, 100's hours of specialized training in psychological dynamics of interpersonal violence, child abuse and domestic violence, court qualified expert in several states on sexual assault, child abuse, domestic violence, police procedures in investigating these matters. Attorney for 23 years representing parties and children in these matters in civil, criminal and juvenile courts.

Degrees/Certifications: BA, Rhetoric, 1977, U.C., Berkeley JD, Oakland College of Law, 1993

Awards/Honors: ABA Gavel Award, 1980; Officer of the Year, California State Juvenile Officer's Assn, 1990; Top Attorneys of America, 2018-2019, Who's Who Directories.

View Seth Goldstein's Consulting Profile.

Mitchell L. Lathrop, has over 50 years of experience in the practice of law, and specialized knowledge in Insurance, Reinsurance, and Lawyers' Professional Responsibility. For the past 30 years, Mr. Lathrop has served as a Mediator, Arbitrator and Expert Witness in his fields of expertise. A seasoned trial lawyer, he brings his many years of practice to alternative dispute resolution. 

Mr. Lathrop is admitted to practice in California, New York and the District of Columbia, as well as before the U.S. Supreme Court and the U.S. Courts of Appeals for the Second, Fifth, Ninth, Tenth, District of Columbia and Federal Circuits. Mr. Lathrop is a former Presiding Referee of the California State Bar Court. He serves on the National Panel of the American Arbitration Association and is a Distinguished Neutral of the International Institute for Conflict Prevention and Resolution (CPR), as well as a member of the London Court of International Arbitration. He is the author of "Insurance Coverage for Environmental Claims," published by Lexis-Nexis Matthew Bender. He has qualified as an expert in insurance and legal malpractice in both state and federal courts. 

Areas of Expertise:

• Insurance bad faith and standard of care and conduct
• Reinsurance Law - Property and Casualty insurance
• Treaty and Facultative Reinsurance
• Environmental Insurance
• Complex insurance coverage Issues
• Lawyers' Professional Responsibility

Kimberly A. Baldwin-Stried-Reich, MBA, MJ, PBCI, CPHIMS, RHIA, CEDS, CPHQ, FAHIMA, has over 30 years of experience in a variety of healthcare settings. She specializes in Healthcare Informatics and HIPAA Compliance.

Ms. Reich holds a Master’s of Business (MBA) from the Lake Forest Graduate School of Management, a Master’s of Jurisprudence (MJ) in Health Law and Policy from the Loyola School of Law - Beazley Institute for Health Law and Policy in Chicago, IL and a Post Baccalaureate in Clinical Informatics (PBCI) from the Johns Hopkins School of Medicine Clinical Informatics Certificate Program.  She is the first Registered Health Information Administrator (RHIA) to complete the Johns Hopkins Division of Health Sciences Informatics Certificate Program and certification in EDiscovery. She is the lead author of the 2012 AHIMA publication E-Discovery and Electronic Records, a first of its kind healthcare e-discovery resources. 

Ms. Reich maintains active membership and participates in The Sedona Conference® for Privacy & Security & Electronic Records Production, American Health Information Management Association (AHIMA), American Medical Informatics (AMIA), Healthcare Compliance Association (HCCA), Society for Corporate Compliance & Ethics (SCCE), Society for Participatory Medicine (SPM), American Society for Healthcare Risk Management (ASHRM), Information Governance Initiative (IGI) and Greater Chicago Health Information Management Systems Society (GCCHIMSS).

Litigation Support - Ms. Reich is an expert witness for both defense and plaintiff legal counsel in matters involving HIPAA, e-discovery, and Electronic Health Records Systems fraud and abuse. Her services include thorough report preparation, depositions, and trial testimony. 

Areas of Expertise:

View Kimberly Reich's Consulting Profile.

Jason McDonald, PhD, is a expert witness, who specializes in SEO (Search Engine Optimization), Social Media Marketing, and Google Ads (AdWords) and has been retained by clients all over the world. His primary focus for his expert witness work is on digital marketing and online advertising, both organic and paid. 

Background Experience - With a BA from Harvard and a PhD from Berkeley, Dr. McDonald began working at a number of San Francisco Bay Area start ups, ranging from Omnibus, Computer Currents, and MW Media. He also wrote freelance for many years with articles appearing in trade journals and press such as EE Times, Dr. Dobb’s, and Software Development Forum. In 1995, he left MW Media and was one of the co-founders of eg3.com. 

Today, Dr. McDonald is Senior Editor for content at eg3.com and is responsible for website coverage (keywords), the monthly newsletter, and the series of Insiders’ Guides on topics from RTOS to FPGAs. He also is the Senior SEO Director at the JM Internet Group. The author of the best-selling SEO  Workbook, Google Ads, and Social Media Marketing Workbooks on Amazon, Dr. McDonald currently teaches at Stanford University Continuing Studies and has taught at the Bay Area Video Academy (BAVC), and AcademyX in San Francisco, California. 

Litigation Support - Dr. McDonald is certified in both California state court and Federal court to testify as an SEO, Social Media Marketing, and Google Ads (AdWords) expert witness. His cases have involved trademark, advertising, and other internet-related issues. With deposition and trial testimony experience, his services are available to counsel representing both Plaintiff and Defendant.

• SEO Areas of Expertise: Goal Assessment, Keywords, On Page Optimization, Off Page Optimization, Metrics, Rank
• Google Ads (AdWords) Expertise - AdWords Assessment, Keyword Match Types, Search Network vs. Display Network, Conversions and eCommerce, Metrics, Beyond AdWords
• Social Media Expertise - Facebook litigation, Twitter litigation, LinkedIn litigation or any litigation involving social media marketing

View Dr. McDonald's Consulting Profile.

C. Matthew Curtin, CISSP  Founder and CEO of Interhack is a Certified Information Systems Security Professional. An Expert in Computers and Information Technology, Mr. Curtin and his team at Interhack help attorneys and executives use data and computer technology in high-stakes situations. 

Mr. Curtin's work has been at the cutting edge of the intersection of law and technology. The U.S. Court of Appeals for the First Circuit relied on Interhack's forensic computing practice and Mr. Curtin's expert opinion when it established standards for application of Federal wiretap statutes to Web technology, In re Pharmatrak Privacy Litigation (see link above). 

Academic references to their work include the Stanford Law Review and university courses throughout the world. Mr. Curtin maintains a regular academic appointment as a Senior Lecturer at The Ohio State University's Department of Computer Science and Engineering. He currently chairs the Recruitment subcommittee of the Business Advisory Network that advises the Ohio Department of Education's standards for technology education in secondary and postsecondary schools throughout the state. 

C. Matthew Curtin's services are available for plaintiffs, defendants, and for the courts directly on technical matters. 

Areas of Forensic Expertise:

• Electronic Discovery
• Preservation and Forensic Analysis of Data
• Complex Analysis of Non-Standard Data Sets
• Investigations
• Data Breaches

View Mr. Curtin's Consulting Profile.