Our Team

media_professionalsThe Clear Case Legal team is a group of seasoned media professionals
— former national television producers, educators, information designers, editors, trial technicians — with over 36 years experience producing legal demonstratives for judges and juries.  We combine our extensive knowledge of cognitive research and judicial experience with decades of multimedia production in education, corporate communications and national broadcast television.

Peter LengsfelderPresident
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Peter Lengsfelder is recognized as a pioneer in visual litigation strategy, being one of the first in his field to apply psychology and cognitive research to courtroom visual presentations. His extensive national broadcast, educational media, and cognitive studies expertise, informs his consultation to the nation’s most influential law firms. His storytelling, visualization and analytical skills have produced successful strategy and legal graphics in such landmark cases as Amazon.com v. Barnes&Noble.com, Hilgraeve v. Symantec, National Resources Defense Council v. Patterson, Oracle v. Google, US v. Koch Industries, and the Williams Companies, Electronic Data Systems and McKesson/Bear Stearns Securities Class Actions.

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Mr. Lengsfelder has supported such prestigious law firms as Adams & Reese; Bernstein Litowitz Berger & Grossmann; Bingham McCutchen; Bryan Cave; Cooley Godward; Dickstein Shapiro; Duane Morris; Farella Braun+Martel; Fenwick & West; Goodwin Procter; Heller Ehrman; Latham & Watkins; Lowenstein Sandler; Morrison & Foerster;  Orrick Herrington & Sutcliffe; Reed Smith; the U.S. Department of Justice and Winston & Strawn

He has consulted on anti trust, biotech and medical, class actions, complex business, construction, employment, environmental, financial, intellectual property, insurance, ITC hearings, legal malpractice, oil and gas, patent, product liability, real estate, securities, and white-collar criminal law.

Mr. Lengsfelder’s experience includes 22 years producing and directing Emmy-award winning national television and corporate media for such clients as CBS-GroupW, PBS, CNN, the Discovery Channel, Wells Fargo, McGraw-Hill, Simon & Schuster, Apple, Intel, State of California, the NFL, and NBA Entertainment. He began his career in a New York advertising agency directing the Bic Pen, Hamilton-Beach and other major accounts. Peter Lengsfelder is the author of many articles on legal visuals; new research on cognitive approaches in court; and media and its impact on juries and litigation strategy. He has frequently lectured on the same topics. He is a long-time member of NATAS (the National Academy of Television Arts & Sciences), the American Bar Association, the San Francisco Bar Association, the American Society of Trial Consultants, and the Association of Business Trial Lawyers.

Ian DaySenior Litigation Consultant
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Ian Day has spent more than a decade producing litigation media nationally for such notable law firms as Bingham McCutchen; Bryan Cave; Fenwick & West; Fish & Richardson; Jones Day; Orrick Herrington; Pillsbury Winthrop; Quinn Emanuel; and the Attorney General of California; and the U.S. Department of Justice.

Mr. Day’s work has included anti trust, class actions, complex commercial, ITC hearings, intellectual property, and financial law. Notable cases include Freedom Wireless v. BCGI, Monster Cable v. Discovery Channel Communications, Nichia v. Seoul Semiconductor, Nokia v. Qualcomm, Occidental Petroleum v. Country of Ecuador, Samsung v. Panasonic, State of California v. Sutter Health, and US Airways v. Merrill Lynch.

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Prior to litigation consulting, Ian Day received his MFA from Northwestern University and spent his early years producing and directing corporate communications and multimedia for Fortune 500 companies like Apple, Bank of America, Chevron, Honda, National Semiconductor, and
The Gap.

His clients include Lexar Digital Media, Merrill Lynch, Occidental Petroleum, Panasonic, Seagate Technology, State Farm and Symantec Software among many others.

Linda GrafDirector, Client Services/Litigation Consultant
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Since joining Clear Case Legal in 2009, Linda Graf has consulted on cases for Bryan Cave, Farella Braun+Martel, Latham & Watkins, Miller Starr Regalia, Morrison & Foerster, Reed Smith, the U.S. Department of Justice and others in the areas of anti trust, environmental, health care, intellectual property, insurance defense, land use, medical malpractice, and white collar criminal.

Ms. Graf brings over twenty years of business development experience to Clear Case Legal. For the first fifteen years of her career Linda worked in the graphics and print media industry, managing thousands of projects as the liaison between creative teams at F500 companies and production facilities nationwide.

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Ms. Graf is also a certified coach and trained facilitator who has supported clients in defining and executing business strategies. Prior to joining Clear Case Legal, Linda Graf consulted with clients such as Amgen, Gap, Genentech, Union Bank of California and Lawrence Livermore Labs.

Ms. Graf’s education is in Strategic Management from Dominican University with an emphasis in communication, conflict resolution, leadership development and business strategy.

John DahleLitigation Consultant
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John Dahle has degrees in Aerospace and Mining Engineering, and graduate studies in Mechanical Engineering. Prior to joining Clear Case Legal, he had nine years experience with the Federal government conducting engineering research and computer analysis leading to development of Federal safety standards. In addition, he assisted the US Department of the Interior producing technical educational and training films, videos and television spots. With Clear Case Legal, John Dahle has consulted on intellectual property and construction cases.

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In the private sector, Mr. Dahle has applied his research and engineering experience to new product design, as well as developed mathematical computer models and experimental testing of real world situations involving dynamics of physical systems (rollover and crashes). He has extensive experience managing information systems and technology (MIS/IT).

Based on his technical expertise John Dahle has provided deposition and courtroom testimony as an expert witness in over 100 legal cases.

Dianne YatesInternational Development
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Since the early 1980’s, Dianne Yates has worked with law firms providing software solutions that support practice profitability and reduced administrative costs.

She has introduced solutions supporting increased case wins and implemented applications that enabled efficient cost management. Ms. Yates’ roles have included Business Development for Boardroom Strategies; Senior Management and Business Development roles with Digital Equipment Corporation; Outsourced Strategic Services for Thomson Lawbook Company; and Office Automation for Legal Practices, Xerox.

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Dianne Yates has experience in U.S., domestic and international business. At Clear Case, Ms. Yates’ responsibilities include market research, business development and partner alliances.

Michael McMahonCLVS, Sr. Trial Tech/Legal Video Specialist
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Michael McMahon has been providing professional video services to the legal community, nationally and internationally, for 20 years, including videotaped depositions, text-to-video synchronization, site inspections, IMEs, examinations under oath, and courtroom and trial presentations.

Mr. McMahon began his career in San Jose with the Popelka Allard Law Firm where he created the in-house investigation and research department. He has since worked on a number of high profile cases including Lexar v. Toshiba, a $465 million win for Lexar.

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Michael McMahon earned his Certified Legal Video Specialist (CLVS) accreditation through the National Court Reporters Association (NCRA).

Continuing Education

All front line Clear Case staff are required to continue active legal; media; and information design education, by participating in Continuing Legal Education (CLE), as well as litigation and presentation seminars and forums.

Our team of information design specialists are experienced in legal visualizations, and work on state-of-the-art digital workstations. Our trial technicians are litigation veterans who understand courtroom dynamics as well as the latest technologies.

Pro Bono

Clear Case Legal is committed to pro bono work, and encourages and supports staff to provide pro bono hours and company resources to projects of greatest need and impact. In the past, projects have included supporting a Public Defenders Office with litigation strategy and visuals for a three-strikes defendant; producing media that: supports the development and building of water supplies for people in small villages in Zimbabwe, Africa; educates American farmers about the various issues surrounding genetically-modified crops; and illuminates coming-of-age issues of young women, age 13-22, in the Bay Area.