StoneTurn is pleased to announce that the Firm as well as three of its Partners, Christopher Martinez, Alan Ratliff and Ambreen Salters, have been recognized for their outstanding work across Intellectual Property (IP) in the IAM Patent 1000: The World’s Leading Patent Professionals for 2025.
StoneTurn’s Intellectual Property Partners possess experience in providing a range of expert testimony, litigation support and transactional services—from damages expertise to royalty compliance and IP valuation matters. The IAM Patent 1000 notes StoneTurn’s “rich patent dispute know-how ensures strategic analysis and expert opinions for infringement cases.” It also notes, “Alan Ratliff, Christopher Martinez and Ambreen Salters combine their expert knowledge with a touch of flair, making them exceptional in their field.”
According to IAM, the IAM Patent 1000 “is commonly regarded as the definitive ‘go-to’ resource for those seeking to identify world-class, private practice patent expertise as well as leading expert witnesses in the US… [To] arrive at the 2025 rankings, IAM undertook an exhaustive qualitative research project to identify outstanding firms and individuals across multiple jurisdictions. When identifying the leading firms, factors such as depth of knowledge, market presence, and the level of work on which they are typically instructed were all taken into account, as well as positive peer and client feedback.” Learn more about the IAM Patent 1000.
About Christopher Martinez:
Christopher Martinez—listed as “Recommended” by IAM— is a Co-Founder of StoneTurn and the firm’s Chairman. 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 the pharmaceutical, biotechnology, medical device, semiconductor, telecommunications, Internet / e-Commerce and software sectors.
According to the IAM Patent 1000, Christopher brings an “economist’s analytical prowess,” as an expert witness “for patent and complex commercial dispute matters across US federal districts.”
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, “Having testified in more than 50 jury trials, Ratliff leverages his financial and legal expertise to offer patrons top-notch damages and valuation guidance. He is also dedicated to mentoring and developing the next wave of consultants at StoneTurn.”
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 20 years of experience in consulting for clients and counsel involved in IP and complex commercial disputes. She has assisted clients by providing a wide range of economic analyses, including lost profits, reasonable royalties, price erosion, unjust enrichment, disgorgement of profits, and market and capacity assessments.
According to the IAM Patent 1000, Ambreen is lauded for her skills as an expert witness for complex commercial dispute matters, and notes she “has recently commanded eight-figure verdicts for her plaintiff clients.”
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 […]