Litigation Support

Arch Canyon’s professionals have qualified as experts in various legal jurisdictions, including California Superior Courts, Federal Bankruptcy Courts, and the Delaware Court of Chancery. Our highly credentialed professionals provide expert analysis and testimony for shareholder disputes, damages, intellectual property matters, bankruptcy and restructuring, and related economic issues.

Litigation support is not a restyled consulting slide deck. It is independent analysis prepared to the standard the forum requires — and explained clearly in reports, depositions, and testimony.

What litigation support covers

We assist counsel with valuation and economic analyses that may be used in mediation, arbitration, or court. Engagements commonly involve:

• Opinions of value for business interests in dispute
• Damages frameworks, including lost profits and other economic damages theories
• Review and critique of opposing expert work
• Rebuttal analyses
• Expert reports, deposition testimony, and trial testimony

Mr. McArthur has qualified as an expert witness in Los Angeles County, Fresno County, Santa Cruz County, and Riverside County Superior Courts, and has qualified and testified in the U.S. Bankruptcy Court and the Delaware Court of Chancery. He has also provided expert witness services via deposition, arbitration, and mediation.

When counsel engages valuation experts

• Shareholder and partner disputes
• Dissolutions under California Corporations Code Sections 1800 and 2000
• Bankruptcy and restructuring matters
• Economic damages and lost profits analyses
• Misappropriation of trade secrets
• Intellectual property infringement disputes
• Business interruption claims
• Loss of goodwill matters
• Buy-sell and appraisal-rights disputes requiring independent valuation opinions

What we do

Our litigation support services include expert analysis and testimony for:

• Shareholder disputes
• Dissolutions under California Sections 1800 and 2000
• Bankruptcy and restructuring
• Economic damages and lost profits
• Misappropriation of trade secrets
• Intellectual property infringement
• Business interruption
• Loss of goodwill

Process / what to expect

1. Early case assessment with counsel. We discuss theories of the case, valuation dates, documents available, and procedural posture, including disclosure deadlines.
2. Independent analysis. We build opinions from the record and reliable data — not from advocacy talking points.
3. Expert reporting. We prepare reports that meet applicable rules and clearly state opinions, bases, and methodologies.
4. Deposition and hearing preparation. We work with counsel to prepare for examination while preserving independence.
5. Testimony. We present opinions clearly to judges, arbitrators, or juries as the engagement requires.

How we work with counsel

Effective expert work starts with clear role definition. Counsel owns strategy and advocacy; the expert owns independent opinions within the assigned scope. We are candid about what the data will and will not support, and we flag gaps early so discovery and timing can be managed.

We are accustomed to the practicalities of California Superior Court practice, bankruptcy proceedings, and Chancery matters — including compressed schedules, document-intensive records, and the need for opinions that remain coherent under cross-examination.

Why Arch Canyon

Court qualification history matters because it reflects experience explaining complex valuation issues under oath. Combined with CFA, ASA-BV, ABV, and MAFF credentials and a practice that also serves tax and transaction clients, Arch Canyon brings both technical depth and communication discipline to disputed matters.

Our highly credentialed experts provide well reasoned, supportable, and defensible opinions.

Contact: 818.449.6300 | info@archcanyon.com | Agoura Hills, CA