Professor Dej-Udom Krairit founded Dej-Udom & Associates in 1986, establishing one of Thailand's first specialist intellectual property practices. Over four decades, he has built the firm into a full-service commercial law firm advising multinational companies across five practice areas. He continues to lead the firm's IP strategy and serves as counsel on complex cross-border matters.

Wanchai Kijchanpaiboon is a Senior Partner at Dej-Udom & Associates with over two decades of litigation experience. His practice spans a broad range of contentious matters, including civil and consumer disputes, intellectual property disputes and criminal matters. He is recognised for a steady courtroom approach and the ability to manage complex cases across multiple legal sectors.\nHe brings a pragmatic, client-focused perspective to dispute strategy, with an emphasis on clear case framing, disciplined evidence management and effective advocacy through each procedural stage. He graduated from Thammasat University in 1993 and Chulalongkorn University in 1999, and was admitted to the Thai Bar in 1995.

Nipa Pakdeechanuan, Esq. is the firm's senior corporate partner and an Executive Director, with a practice centred on corporate law, incorporation, and start-up and market-entry matters. She advises foreign clients on the regulations and requirements for establishing and operating businesses in Thailand, with a practical focus on aligning corporate structures with licensing, regulatory and commercial needs.\nHer work includes leading legal due diligence for foreign companies entering joint ventures with Thai counterparties and supporting clients in obtaining the business licences, certificates and permits required across a wide range of industries. She has also handled registrations under the Treaty of Amity and Economic Relations between Thailand and the United States, assisting clients in navigating the applicable conditions and documentation requirements. Ms Pakdeechanuan graduated from Thammasat University in 1987, obtained a Business Law Diploma in 1998, and was admitted to the Thai Bar in 1990.

Kittitad Rattanakuha is a Senior Partner in the Litigation Department, specializing in employment law, labor dispute resolution, and white-collar criminal defense. He provides strategic counsel to corporate clients on the full spectrum of employment matters—from drafting robust service contracts and internal policies to representing management in high-stakes negotiations and hearings before labor authorities. Kittitad is distinguished by his ability to bridge the gap between legal theory and operational reality. Drawing on his prior experience in human resources and legal management, he delivers commercially grounded advice that minimizes organizational disruption while ensuring stringent regulatory compliance. His diverse litigation portfolio spans commercial, intellectual property, and criminal law, where he has successfully defended clients in high-value disputes and secured favorable settlements in complex multi-jurisdictional cases. Notably, his dual expertise in labor and criminal litigation provides a unique advantage for clients facing matters where employment disputes intersect with regulatory investigations or criminal exposure. Committed to the highest standards of integrity, Kittitad serves as a lead litigator and strategic advisor in the firm’s most sensitive and high-stakes mandates.

Worawut Krairit, Esq. is a Senior Partner and Executive Director of Dej-Udom & Associates, advising major Thai and international corporate clients across corporate law, customs, taxation, property, and intellectual property. Before assuming his executive role at the firm, he worked as a corporate tax and business consultant at SGV, the local representative of Arthur Andersen, where he developed a strong foundation in commercial advisory and regulatory engagement. Since joining Dej-Udom & Associates in 1988, Mr. Krairit has supported clients on complex, business-critical legal matters and has worked closely with numerous Fortune 500 companies in obtaining Board of Investment privileges. He is known for combining legal analysis with practical commercial judgment, helping clients structure and execute matters in a way that aligns legal requirements with operational realities. Mr. Krairit graduated from Thammasat University in 1975 and was admitted to the Thai Bar in 1976.

Pimpair Pienpattara is a partner leading the Immigration & Relocation Department at Dej-Udom & Associates. A licensed attorney and notary with a Bachelor of Laws from Thammasat University, she brings over a decade of specialised experience in Thai immigration law, work permits and corporate mobility solutions. Her career began at the firm, where she mastered the intricacies of visa procedures and cross-border employment compliance, and later expanded through leadership roles at global relocation and corporate service organisations. In these roles she managed high-stakes immigration programmes, oversaw teams of consultants and served as the primary point of contact for multinational clients. She established immigration service functions, designed processes and coordinated with people, tax, accounting and payroll teams to ensure regulatory compliance, including Board of Investment (BOI) matters. Returning to Dej-Udom & Associates as a partner, she leads the department with a focus on proactive advisory services that remove barriers for talent and support business mobility. She is committed to sharing knowledge through training sessions and immigration updates, helping clients anticipate regulatory changes and operate confidently across borders.

Benjawan Rasdusade is a Partner at Dej-Udom & Associates, specialising in taxation and corporate law. Appointed to the partnership in 2019, she advises clients on a broad range of commercial matters, combining a tax-sensitive perspective with practical corporate structuring and compliance support.\nHer experience includes company registration and ongoing corporate administration, as well as advising on foreign investment-related considerations and property matters. She is valued for clear analysis, careful attention to statutory requirements, and an approach that prioritises workable solutions for clients operating in diverse sectors. Admitted to the Thai Bar, she supports clients through both routine and complex advisory work, helping them navigate regulatory expectations while maintaining commercial momentum.

Suwanan Chongcharoen is an Assistant to Partner with over seven years of experience in immigration services, providing advisory and operational support to expatriates and multinational companies in Thailand. She specialises in managing immigration processes, maintaining compliance with Thai immigration and labour requirements, and delivering practical, client-focused solutions. Her work covers a broad range of immigration matters, including business and employment visas, dependent visas and BOI-related cases, as well as outbound support such as exit permits, consular services, notarisation and legalisation. She regularly liaises with key authorities including the Immigration Bureau, Ministry of Labour, Revenue Department, Board of Investment and foreign embassies to keep matters accurate, timely and compliant. Known for professionalism and attention to detail, she identifies issues early and adapts quickly to regulatory changes to maintain service quality.

Narut Siriphattrasophon is a senior lawyer in the Immigration & Relocation Department with over eight years of experience in Thai immigration law. A graduate of Kasetsart University, he advises domestic and international clients on matters involving the Board of Investment, Industrial Estate Authority of Thailand, Department of Mineral Fuels and the Long-Term Resident programme. He is known for his meticulous attention to detail, strategic negotiation skills and commitment to timely, compliant results. Fluent in multiple languages and grounded in business management principles, Narut excels at guiding foreign clients through complex regulatory frameworks. He interprets and applies evolving immigration policies to ensure full compliance and collaborates with government agencies to resolve complicated cases. Motivated by a passion for cross-cultural communication, he continually develops his legal skills and cultural awareness to deliver practical, tailored solutions.

Khunlarpus Srisombulananont is a trademark attorney who focuses on registration, prosecution and brand protection. Licensed as a lawyer and Barrister-at-Law in Thailand and a Certified Public Accountant, she combines legal expertise with analytical insight from accounting, translation and human resources. Her multidisciplinary background allows her to address intellectual property matters with both legal precision and practical business understanding.\nOver the past three years, she has managed trademark portfolios for clients ranging from local start-ups to internationally recognised brands. She conducts clearance searches, prepares and files applications, drafts office action responses and evaluates infringement risks. Committed to efficiency and accuracy, she leverages technology to streamline research and documentation while maintaining careful legal analysis. Khunlarpus views trademarks as strategic business assets and focuses on protecting clients' brand identities throughout their growth and market expansion.

Jirarat Jundee is an intellectual property lawyer specialising in trademark law and brand protection. She advises clients on trademark registration, management and enforcement in Thailand and serves on the Business Law Development and SMEs Support Committee, where she counsels entrepreneurs on intellectual property issues. Her practice is rooted in a belief that robust IP protection underpins brand credibility and sustainable growth in the digital age. Before joining Dej-Udom & Associates, she held senior roles at the Lawyers Council of Thailand under the Royal Patronage, including Assistant to the President, Head of Academic Affairs and Head of the Spokesperson and Public Relations Office. These positions involved policy development, professional organisation management and communication with government agencies. Her experience in strategic communication enables her to translate complex legal concepts into clear, practical guidance for clients and to integrate legal advice with public-relations considerations.

Maneenuch Chansiricharoengul is a senior associate whose practice spans corporate consultancy and arbitration support. Since joining the firm in 2022, she has balanced front-end contract work advising on legal issues, drafting agreements and supporting business registrations with back-end dispute resolution, where contractual wording is tested in arbitration or mediation. This dual mandate reflects her ability to align commercial objectives with procedural rigour. As an arbitrator assistant to Prof. Dej-Udom Krairit, she supports construction-related arbitration cases by scrutinising submissions, preparing reports and memos, organising case archives and assisting with award drafting. These responsibilities require disciplined analysis, document governance and professional judgement. Maneenuch holds a Bachelor of Laws in Business and Tax from Chulalongkorn University with Second Class Honours and is a member of the Lawyers Council of Thailand. Her combination of corporate and dispute-resolution experience allows her to advise clients across the transaction and litigation spectrum.

Orapin Piriyapanyaporn is counsel in the firm's Incorporation & Corporate Matters practice. She advises Thai and foreign-owned businesses on corporate and regulatory matters, with particular focus on corporate structuring, foreign business licensing, statutory compliance and ongoing corporate secretarial requirements. Her practice combines strategic support on complex matters with efficient execution of routine filings and implementation work.\nIn her role, Orapin works closely with senior partners on non-routine or high-impact engagements and independently manages day-to-day corporate maintenance in coordination with internal legal teams. She supports clients across the corporate lifecycle, including establishment, restructuring and dissolution, ensuring that documentation, filings and governance processes align with applicable legal requirements and commercial objectives.

Saranarat Wisesla is a licensed lawyer and senior associate with a strong background in corporate and commercial law, cross-border transactions, alternative dispute resolution and intellectual property. A graduate of Queen Mary, University of London, she advises multinational and domestic clients on commercial contracting, corporate governance, regulatory compliance and data protection. Her postgraduate training and law-firm experience have honed her skills in legal due diligence, contract negotiation and risk assessment.\nShe has supported arbitral tribunals by conducting legal research, preparing case summaries and assisting with disputes involving land purchase, share purchase and hotel management agreements. In corporate matters, she drafts and negotiates shareholders' agreements, leases, joint venture agreements and data-processing contracts and coordinates with share registrars on corporate actions. Her intellectual-property work includes advising on patent filings, design registrations and licensing.

Nattapas Kempusit is a litigation lawyer with experience in administrative, civil and labour law. Formerly a legal officer at the Office of the Teacher Civil Service and Educational Personnel Commission, he handled disciplinary matters, reviewed administrative orders and advised on procurement issues, developing skills in legal analysis and document review within regulated procedures. At Dej-Udom & Associates he represents clients in petitions to revoke shareholders' meeting resolutions, consulting agreement disputes and other litigation matters. His responsibilities include case preparation, legal research, drafting pleadings and witness statements and supporting litigation strategies. Nattapas applies a meticulous approach to achieve effective outcomes for clients, drawing on his understanding of government processes and his experience in both public and private sectors.

Chanon Koaykul is an associate in the firm's Litigation, Mediation & ADR practice, specialising in commercial and labour-related disputes. With a professional background in banking, retail channel development and process improvement, he brings operational and financial insight to dispute strategy — particularly where business processes and evidence trails shape practical outcomes.\nWorking closely with a senior partner, he supports high-stakes litigation from early case assessment through pleadings, evidence planning and client coordination. His approach prioritises protecting client rights while supporting business continuity, with advice that is balanced, legally sound and pragmatic. His experience spans international trade disputes, shareholder and executive conflicts, public-sector contract claims and large-scale employment matters handled through labour authorities and the Thai Labour Court.

Kamol Kongpientam is a litigation attorney and Barrister-at-Law whose practice spans complex civil and criminal disputes, intellectual property enforcement and corporate litigation. A graduate of Kasetsart University with Second-Class Honours, he holds a lawyer licence and Thai Bar qualification. Over four years, he has developed a strategic approach to conflict resolution, providing comprehensive counsel from pre-litigation strategy to courtroom representation.\nHis experience includes high-value lease disputes, consulting agreement arbitration and trade-name enforcement, where he has secured significant judgments and awards while defending against counter-claims. He also advises on corporate governance, drafts pleadings and handles court procedures across civil, criminal and administrative matters. Kamol's academic achievements include awards in moot court competitions and recognition as a "Young Ambassador" for the Central Intellectual Property and International Trade Court.

Kasamarat Sapsomboon is a junior associate in the firm's intellectual property practice focused on patent matters. She advises local and international clients on filing strategies under Thai patent law and assists with the preparation and submission of applications. Her role includes reviewing procedural requirements, navigating filing options and ensuring applications meet formal standards.\nHolding a Bachelor of Laws from Thammasat University, she brings a strong foundation in legal analysis and cross-border considerations. Before joining the firm she worked as a parliamentary assistant, gaining experience in legislative research, legal drafting and collaboration within structured environments. She also participated in an AFS exchange programme in Italy, broadening her cross-cultural perspective. Committed to continuous learning, Kasamarat approaches technically complex matters with a proactive mindset.

Hataichanok Porramasetanatikul is an intellectual property associate concentrating on trademark and patent prosecution, with additional experience supporting IP litigation. She advises clients on securing, maintaining and enforcing intellectual property rights through practical, strategically aligned solutions. Her academic credentials include a Bachelor of Laws (Second Class Honours) from Thammasat University and a Master of Laws in Intellectual Property Law from Indiana University Maurer School of Law, where she received a merit-based scholarship. In practice, she manages trademark portfolios from clearance searches to application drafting and office action responses and assists with enforcement strategies such as cease-and-desist letters and administrative proceedings. She also supports patent filings, substantive examination requests and prosecution communications, working closely with inventors to coordinate patent protection. Hataichanok regularly assists the firm's litigation team by conducting legal research, analysing authorities and drafting pleadings. Licensed by the Lawyers Council of Thailand, she is known for her methodical approach, attention to detail and interest in emerging IP issues such as entertainment and cybersecurity.

Titinun Pholnangen is a lawyer in the firm's Litigation, Mediation & ADR practice. He has three years of experience working on dispute resolution matters, contract review and case coordination, with a focus on careful analysis, attention to detail and clear communication with clients and internal teams. He approaches each assignment with integrity and professionalism, aiming to deliver accurate, practical legal solutions.\nIn his current role, he supports case preparation, legal research, document drafting and client coordination to ensure matters are handled efficiently and in line with the firm's standards. Titinun values collaboration and continuous learning, and he is committed to producing reliable work product that contributes long-term value to the organisation.

Orawan Samuseneeto is an intellectual property associate with a strong background in IP law, legal compliance and contract management. She advises Thai and international clients on securing and enforcing trademarks and patents abroad, navigating complex global regulations and coordinating with foreign IP offices. Her role includes managing multi-jurisdictional portfolios, monitoring rights and resolving IP-related disputes.\nOrawan holds a Bachelor of Laws from Thaksin University and is currently pursuing a Master of Laws in Business Law at Sripatum University. She served as a legal officer at the Medical Service Department of the Bangkok Metropolitan Administration, where she handled disciplinary procedures, complaints and regulatory compliance. She later joined a multinational manufacturing company, developing expertise in legal compliance, data protection, anti-bribery regulations and employee training. This combination of public-sector and corporate experience informs her current work, where she provides clear, practical guidance to clients.

Montri Pumingsri is a lawyer in the firm's Litigation, Mediation & ADR practice, with more than 15 years of experience representing clients in civil and criminal court proceedings. His work combines courtroom advocacy with practical, rights-focused advice to help clients navigate disputes and regulatory exposure with clarity and confidence.\nHe drafts and reviews a wide range of legal documents, including litigation filings and business contracts, and advises clients on their legal rights and obligations throughout the lifecycle of a matter. He also supports legal execution and enforcement steps, helping clients implement judgments and agreed outcomes through structured, compliant processes.

Rachod Chankaew is a corporate and commercial lawyer with approximately nine years of experience providing legal support and advisory services to domestic clients. His practice focuses on corporate matters and commercial transactions, working closely with senior lawyers and partners to deliver practical, business-oriented solutions.\nHe advises on a broad range of general corporate matters, including company incorporation, corporate structuring and ongoing corporate compliance. His work includes preparing and reviewing corporate documents, shareholders' and board resolutions, and statutory filings with relevant authorities. He also regularly supports mergers and acquisitions, joint ventures and business restructuring transactions, including legal research, due diligence review and drafting transaction documentation. Rachod is recognised for strong research, analytical and organisational skills, with the ability to communicate legal issues clearly and in a structured manner.