Attorney profile
Cislo & Thomas LLP
The short version
Cislo & Thomas LLP is a Los Angeles intellectual property law firm offering patent, trademark, copyright, trade secret, domain name, privacy, and IP litigation services with a long-established client-care focus.
Strengths
- Full-service intellectual property practice covering patents, trademarks, copyrights, trade secrets, domain names, entertainment IP, IP litigation, privacy, and cybersecurity.
- Established since 1979 with a stated Quality Client Care® focus and client-facing filing platforms including Patentfiler®, Trademarkfiler®, Copyrightfiler®, and Tradesecretfiler®.
- Trademark services span state applications, U.S. applications, infringement, litigation, portfolio management, protection, and worldwide trademarks.
- Reviewers frequently praise responsiveness, patience, professionalism, and legal expertise, often naming Dan Cislo and Dr. Wook Pak.
- Website highlights significant recognition and a stated 98% success rate in winning or settling cases.
Considerations
- Clients praise Dan Cislo and Wook Pak for patient guidance through patent work, without a recurring complaint about attorney access.
- Long-term clients describe reliable help with multiple patents and trademarks and fair fees rather than repeated billing disputes.
About Cislo & Thomas LLP
Cislo & Thomas LLP is a full-service intellectual property law firm based in Los Angeles, California, with a practice centered on patent, trademark, copyright, and related IP matters. The firm describes itself as specializing in patent, copyright, and trademark litigation and has provided its Quality Client Care® approach since 1979. Its services cover patent preparation and prosecution for design, utility, and provisional applications, along with searching, filing, clearance, licensing, maintenance, and litigation. Trademark work includes state and U.S. applications, trademark application preparation, infringement matters, litigation, portfolio management, protection strategies, and worldwide trademarks. The firm also addresses copyrights, entertainment IP, trade secrets, domain name enforcement, cybersecurity, data privacy, GDPR and CCPA compliance, expert witnessing, mediation, and arbitration.
Cislo & Thomas serves inventors, product-development firms, companies, and intellectual property owners seeking help with filings, enforcement, and portfolio management. The firm’s website highlights client-facing platforms such as Patentfiler®, Trademarkfiler®, Copyrightfiler®, and Tradesecretfiler®, and notes experience with U.S. and worldwide patents, trademarks, copyrights, domain names, and U.S. Customs matters. It also states that its attorneys have successfully won or settled 98% of cases and lists recognition including Best Law Firm from The Best Lawyers in America 2019-2026, Super Lawyers awards, Top Attorneys Southern California from Los Angeles Magazine, Top Patent Firms from IP Today, Top 10 Law Firms from Pacific Coast Business Times, and an AV Preeminent ranking from Martindale-Hubbell.
Customer feedback in the available reviews is uniformly positive, with reviewers repeatedly praising professionalism, responsiveness, patience, and legal expertise. Several reviews specifically name Dan Cislo and Dr. Wook Pak, crediting them with guiding clients through the patent process and handling difficult patent matters, including functional food and supplement patents. Reviewers also describe long-term relationships involving multiple patents and trademarks, fair fees, and reliable advice for company IP work. The overall tone suggests a firm that emphasizes accessibility and client education alongside technical IP work.
Prospective clients may therefore need to contact the firm directly for pricing, scheduling, and service-fit questions.
The office is at 12100 Wilshire Blvd #430, Los Angeles, CA 90025. The listed telephone number is +1310-979-9190. The practice website is cisloandthomas.com.
Recurring feedback
What clients consistently mention
- Reviewers commonly describe patent prosecution as efficient and effective, including obtaining patents and managing applications through the process.
- Responsiveness, accessibility, patience, and clear guidance during the patent process are recurring points of praise.
- Professionalism, ethical standards, and legal expertise are frequently highlighted, with several reviewers naming Dan Cislo and Dr. Wook Pak.
- Long-term client relationships involving multiple patents, trademarks, and ongoing IP portfolio work appear repeatedly in the feedback.
- Complex or difficult patent matters, including functional food and supplement patents, are cited as successfully handled.
All reviews
5 out of five stars based on 8 reviews.
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