StoneTurn is pleased to announce that the Firm and three Partners, Christopher Martinez, Alan Ratliff and Ambreen Salters, have again been recognized for exceptional work across Intellectual Property (IP) disputes by IAM Patent 1000: The World’s Leading Patent Professionals for 2026.
In recognizing the firm, the IAM Patent 1000 notes that StoneTurn is “a regular fixture in high-value IP disputes, pairing hands-on damages expertise with meaningful courtroom experience.” The ranking also cites that, “In practice, the team does more than quantify damages. It advises on licensing strategy, royalty audits and compliance, transaction support and investigation-driven disputes, often stepping in where financial, contractual and competitive issues intersect. The firm emphasises sustained senior involvement, with partners actively engaged from early case assessment through deposition and trial, ensuring continuity and accountability throughout the engagement.”
About Christopher Martinez:
Christopher Martinez—listed as “Recommended” by IAM— is a Partner and Co-Founder of StoneTurn. He has more than 30 years of experience in IP damages quantification, intellectual asset licensing and complex financial modeling. Christopher advises companies on the valuation, commercialization, licensing and management of intellectual assets. He has worked with clients across a range of industries, including telecommunications, Internet / e-Commerce, software, pharmaceutical, biotechnology, medical device, and semiconductor sectors.
According to the IAM Patent 1000, Christopher is a “central figure” in StoneTurn’s IP practice. They write, “A former licensing executive at a Fortune 50 company, he brings first-hand commercial experience to his expert work. His practice spans valuation, commercialisation and licensing of assets, and he is regularly appointed as a damages, valuation and licensing expert in patent litigation. Martinez has been designated as an expert in federal and state courts across the US, as well as before the ITC and in arbitration proceedings. His industry experience covers sectors where licensing frameworks and portfolio value often sit at the heart of the dispute. His operational background frequently proves useful in matters involving complex royalty structures or contested commercialisation strategies.”
About Alan Ratliff:
Alan Ratliff—listed as “Highly Recommended” by IAM—has more than 30 years of experience in client service. As StoneTurn’s first lateral partner, he opened the firm’s Houston office in 2005. Alan advises attorneys and their clients on economic-related, accounting and valuation issues in disputes and investigations, as well as in various transactions including the valuation, commercialization, and licensing of intellectual assets.
According to the IAM Patent 1000, Alan “adds substantial depth across disputes and investigations, bringing more than 20 years of experience operating at the intersection of accounting, valuation and legal strategy. He has provided testimony in over 60 trials and arbitrations spanning patent infringement, international contract breaches, misappropriation, fraud and business torts. His practice also includes domestic and cross-border licence and royalty audits, as well as appointments as a special master, arbitrator and auditor. This breadth makes him a versatile adviser in matters where IP valuation converges with contractual and regulatory considerations, including antitrust and reverse payment disputes.”
About Ambreen Salters:
Ambreen Salters—listed as “Recommended” by IAM—has worked in both the London and Houston offices at StoneTurn. She has more than 25 years of experience in consulting for clients and counsel involved in IP disputes. Ambreen’s expertise specifically includes economic analyses of patent, trademark, copyright, and trade secret matters across a wide range of industries such as aerospace, automotive, computer hardware, Internet and software, gaming, medical devices, pharmaceuticals, semiconductors, and telecommunications. She has also participated in licensing negotiations, designed and managed royalty audits, and performed intellectual property valuations for licensors and licensees.
According to the IAM Patent 1000, Ambreen has “a strong focus on economic damages analysis across patent and trade secret mandates. She approaches litigation through a structured economic lens, addressing lost profits, reasonable royalty, price erosion and disgorgement analyses. She has testified for both plaintiffs and defendants in federal and state courts and in arbitration proceedings across numerous jurisdictions. A recent highlight saw Salters serve as damages expert for Samsung in Empire v. Samsung before the Eastern District of Texas. The plaintiff sought $189 million in damages; the jury ultimately awarded StoneTurn’s alternative calculation of $12.5 million. The outcome underscores the firm’s ability to advance disciplined, well-supported economic analyses in high-exposure patent disputes before juries accustomed to significant headline numbers.”
Meet Christopher
Christopher Martinez
Christopher Martinez, Partner, Chairman and Co-Founder of StoneTurn, has more than 30 years of experience in intellectual property (“IP”) damages quantification, intellectual asset licensing and complex financial modeling. Christopher previously […]
Meet Alan
Alan Ratliff
Alan Ratliff has more than 30 years of experience in client service and was StoneTurn’s first lateral partner, opening the firm’s Houston office in 2005. Alan serves as the firm’s […]
Meet Ambreen
Ambreen Salters
Ambreen Salters has more than 20 years of experience in consulting to clients and counsel involved in intellectual property and complex commercial disputes. She has assisted clients by providing a […]