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About Us

Abacus IP offers you in-depth expertise in Cambodian intellectual property and consistent professionalism.

Abacus IP is a full-service intellectual property agency in the Kingdom of Cambodia. Our international team serves local and international clients in all facets of IP. With over a decade of experience, we help innovators and businesses protect what matters most.


Abacus IP has vast experience in the registration, transaction and enforcement of trademarks, patents, industrial designs, copyrights and other forms of intellectual property in Cambodia.


We take pride in keeping up to date with local law and practice, being highly responsive to our clients, and paying close attention to detail.

Pheng Thea - Abacus IP - Cambodia Trademark & Patent Expert
David Haskel - Abacus IP - Cambodia Trademark & Patent Expert

Pheng Thea


Pheng Thea is a partner at Abacus IP. A seasoned IP professional, Mr. Pheng is licensed by the Cambodian Ministry of Commerce's Department of Intellectual Property and certified by the World Intellectual Property Organization. 

Prior to founding Abacus IP, Mr. Pheng lead the IP prosecution practice at a leading Cambodian law firm. His practice involved the registration and maintenance of hundreds of trademarks, patents, industrial designs and other forms of IP on behalf of innovators and businesses from around the globe. 

Mr. Pheng was elected Chairman of the Intellectual Property Association of Cambodia in August 2019.

Mr. Pheng is a graduate of the faculty of law of Pannasastra University of Cambodia. In addition, he holds a Certification in Intellectual Property Specialization from the World Intellectual Property Organization and the University of South Africa.

Professional Memberships

  • ​Intellectual Property Association of Cambodia, Former Chairman

  • International Federation of Intellectual Property Attorneys (FICPI), Member

  • ASEAN IP Association, Former Council Member

  • International Trademark Association, Legislation & Regulation Committee Member

  • South East Asian IPR SME Help Desk, Member of Panel of Experts

  • Asian Patent Attorney Association, Member

  • International Trademark Association, Legislation & Regulation Committee, Former Member

David Haskel


David Haskel is a partner of Abacus IP. A member of the State Bar of California, David maintains a broad practice across all areas of intellectual property in Cambodia.

Prior to founding Abacus IP, David served as managing partner of a leading Cambodia law firm in Phnom Penh, representing clients in a wide range of commercial and IP matters. He has further legal experience with law firms in Silicon Valley, San Francisco and Berlin. Before entering the legal profession, David worked as a research associate with a non-partisan think tank in San Francisco.

David holds a Juris Doctor from the University of California, Berkeley, with a specialization in law and technology, as well as a Bachelor of Arts in political economy from the same institution. Having also studied at Sciences Po in Paris and Tsinghua University in Beijing, he speaks English, French, German and Mandarin.

Professional Memberships

  • International Trademark Association, Brands & Innovation, Former Committee Member

  • California Bar Association

  • Cambodia Startup Advisers, Director

Chaing Sreypeou - Abacus IP - Cambodia Trademark & Patent Expert
Tom Pearson - Abacus IP - Cambodia Trademark & Patent Expert

Sreypeou Chaing

Of Counsel

Ms. Sreypeou Chaing is Of Counsel with Abacus IP and the Managing Partner of CSP & Associates. An attorney admitted to the Bar Association of Cambodia, Sreypeou has years of experience handling contentious intellectual property matters, as well as a broad range of commercial and corporate cases. Prior to joining Abacus IP and founding CSP & Associates, she practiced law with several leading law firms in Cambodia, as well as working as a consulting attorney to private companies.

Sreypeou holds a Master’s degree in Activity Enterprise Law and a Bachelor’s Degree in Private Law from University Lumiere Lyon 2 (France) and a second Master’s Degree and Bachelor’s Degree in Private Law from Royal University of Law and Economics (Cambodia). Sreypeou in addition holds the designation Certificat d’Aptitude de Profession d’Avocate from the Bar Association of Cambodia.

Sreypeou speaks Khmer, English and French.

Tom Pearson

External Advisor

Tom Pearson is an External Advisor to Abacus IP.


He is currently an Associate Professor of Law at the American University of Phnom Penh. He previously served as the Program Director for two international LL.M. programs at the Royal University of Law & Economics (RULE), the Executive Master in International Business Law and the Master of Public and International Law Program, which are dual degree programs jointly administered by the Université Libre de Bruxelles (ULB) and the University of Paris 8. He lectured at RULE from 2012 - 2019 and his past courses include: international arbitration, Cambodian business law and international labor law. He has also presented at and organized conferences on intellectual property law in Cambodia.


Prior to entering academia full-time, Tom served as a Partner and Head of the Corporate & Commercial Practice Group for over three and a half years at a local law firm in Phnom Penh, where he dealt with commercial contracts, market entry and general business law matters. Before moving to Cambodia, he maintained a general legal practice in his hometown of Birmingham, Alabama and handled small commercial cases as well as family law and criminal defense matters.


He holds a Bachelor of Arts in Political Economy from Hillsdale College and a Juris Doctor from George Mason University, where he focused on law and economics. He also holds a Master of Arts in Human Rights and Democratisation from the European Master’s Programme at the Global Campus of Human Rights, organized by the University of Padua. Prior to becoming a lawyer, Tom was a technology and telecommunications policy researcher at public policy organizations in Washington, DC, where his focus stretched from internet governance and freedom of speech to telecommunications deregulation, media ownership and intellectual property issues.

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