Intellectual Property - Test
Drew & Napier, founded in 1889, is the largest leading Intellectual Property (IP) practice in Singapore. We also have an established presence in Southeast Asia through our Drewmarks IP filing offices in Malaysia, Indonesia, Philippines, Vietnam, and Myanmar. Outside of these countries and through our close ties with affiliated firms, we tap on our global network to offer innovative and original solutions for our clients.
Our award-winning Singapore practice is one of the top filers for patents, trademarks, and designs in the country, among the largest handled by any firm here. Our extensive experience is bolstered by a team of over 100, consisting of numerous highly skilled professionals of not only legal, but also diverse technical backgrounds. Many of our patent professionals hold PhDs, Master’s or postgraduate certifications in their specialisations, which include biotechnology, chemistry, engineering, healthcare & life sciences, and telecommunications.
Our promise of quality has earned favourable standing amongst clients and we are often instructed to handle high-value, large-scale, complex matters that involve multiple parties and jurisdictions. Many of our clients in our 130-year history have entrusted their IP work to us for many decades. These include multi-national companies, state-owned companies, medium to large-sized corporations, and family-run businesses. We have acted for Apple, Exxon Mobil Corporation, Facebook, Mediacorp, Pfizer, Qualcomm, Singapore Airlines, SingTel and Toyota.
Our valued clients instruct us to act in a range of contentious and non-contentious IP work, comprising IP litigation, patents, designs, trade marks and servicemarks, copyrights, licensing, distributorship, franchising and confidentiality agreements, IP monetisation, and advice on Life Sciences and Medicines Act regulations.
Prestigious industry publications like Chambers & Partners Asia Pacific, The Asia Pacific Legal 500, and Managing IP consistently affirm our leadership with Tier 1 rankings in IP. Recent accolades include Patent Disputes Firm of the Year and Trademark Disputes Firm of the Year at the Managing IP Asia-Pacific Awards 2025, as well as Patent Prosecution Firm of the Year and Trademark Prosecution Firm of the Year at the Asia IP Awards 2025. The firm was also named Singapore Intellectual Property Firm of the Year for the fourth time at the ALB South East Asia Law Awards 2024.
Practice Areas
Trade Marks, Patents, and Designs
In Singapore and other regional offices, we secure IP registrations directly. In other countries, we use our global network of trusted associates. We also negotiate and prepare licenses, distributorship, franchising and confidentiality agreements covering the full spectrum of IP, for example:
- Conducting searches for trade marks, patents or designs in various jurisdictions
- Advising whether a mark can be registered or a new innovation or design can be patented or protected
- Advising how you can best leverage your patents, trade marks, and designs
- Advising possible alternatives where a mark, patent or design cannot be registered
- Branding and IP strategy
- Drafting, filing, and prosecuting trade mark, patent, and design applications through to registration
Click here to view our Patent Agent's profiles
Intellectual Property Litigation
Drew & Napier is second to none when acting for litigious matters. We have been singled out by clients and prominent trade publications for our in-depth experience in contentious IP matters as our lawyers are regularly instructed in high profile matters. We exceed clients’ expectations where the matters are especially demanding, as our lawyers are expected to quickly understand the technicalities of each industry and the clients’ business objectives.
Our litigation team handles all aspects of IP litigation, for example:
- Applying and executing warrants for trade mark and copyright infringement offences;
- Prosecuting and defending criminal actions for infringement of trade marks and copyright;
- Civil proceedings for infringement of trade mark, copyright, patents and designs, confidential information, including applications for injunctions and Anton Pillar Orders;
- Passing off actions;
- Opposition proceedings;
- Trade mark invalidation and revocation proceedings;
- Actions for breach of distribution, licensing and franchise agreements;
- Claims for unlawful interference with contractual relations; and
- Claims for wrongful use of confidential information.
Intellectual Property Valuation and Transactions
We recognise the increasing importance of IP as a company’s asset for potential investment and leveraging business transactions. We provide strategic advice for our clients on how to best extract value from their IP. Our scope of work includes:
As a full service law firm, we work to our strengths by drawing from the wealth of expertise of our colleagues from the other areas of specialisation, in order to present a robust IP strategy that meets our clients’ business needs.
- Analysing, reviewing, and researching your portfolio
- Assessing licensing and monetising options
- Drafting and advising on IP transaction documents
- Valuing all assets, encompassing copyrights, IP licence agreements, know-how, patents, trade marks, trade secrets etc.
Accolade
Drew & Napier is consistently ranked Tier 1 for Intellectual Property by multiple publications. These publications also regularly name us Singapore Firm of the Year for awards relating to IP.
Chambers Asia-Pacific
Intellectual Property: Domestic 2026 – Band 1 for 19 consecutive years
Leading Individual:
Tony Yeo – Band 1 for IP Litigation (8 consecutive years); Band 2 for IP Litigation (2010 to 2018)
Yvonne Tang – Band 3 for IP Litigation (5 consecutive years) and Band 3 for IP non-contentious
Meryl Koh – Band 3 for IP Litigation (5 consecutive years)
“Strong and genuine relationships with their clients, knowledge, experience and tenacity are key strengths of the firm.”
“Drew & Napier stands out in the intellectual property field due to its exceptional legal expertise, deep technical knowledge and strategic approach.”
"Not only are they very good in their legal knowledge, but they are also able to provide value-added advice and services with an appreciated understanding of our business and our trade marking needs."
"When it comes to responsiveness, we hold Drew & Napier in high regard. We can always rely on a quick response to any queries, despite being in different jurisdictions."
The Legal 500 Asia Pacific
Intellectual Property 2026 - Tier 1 for 27 consecutive years
Tony Yeo - Intellectual Property Lawyer of the Year for South East Asia 2026
Hall of Fame:
Tony Yeo for 7 consecutive years; Leading Individual (2011 to 2020)
Leading Individual:
Yvonne Tang – Leading Partner (2 consecutive years); Recommended Lawyer (7 consecutive years)
Lim Siau Wen – Leading Partner (2 consecutive years); Recommended Lawyer (5 consecutive years)
Meryl Koh – Leading Partner in 2026; Next Generation Partner (2017 to 2025)
Recommended Lawyers:
Ruby Tham – Recommended Lawyer
Rozalynne Asmali – Recommended Lawyer
Javier Yeo – Recommended Lawyer (2 consecutive years); Rising Star (3 consecutive years)
“They are a very strong team for all aspects of IP.”
“They are very pleasant to deal with and always answer questions quickly. They also understand commercial realities and so provide advice which is easy to understand and which I can pass on directly to clients.”
“Experts in IP, professional and attentive.”
“Drew & Napier is one of the biggest and best IP practices in Singapore. The services provided are top-notch.”
Asian Legal Business (ALB) Magazine
Intellectual Property rankings 2026 (Singapore) – Tier 1 for 14 consecutive years
ALB Southeast Asia Law Awards 2024 – won Singapore Intellectual Property Firm of the Year for the fourth time
Tony Yeo – ALB Asia Top 15 IP Lawyers 2025 (5 consecutive years)
Yvonne Tang – ALB Top 15 Female Lawyers in Asia in 2023
Meryl Koh – ALB’s Asia Super 50 Disputes Lawyer 2024 and Singapore Rising Star 2022
Javier Yeo – ALB Rising Stars 2025 and ALB Asia’s 40 under 40 in 2024 (Oct 2024 issue)
Managing IP
2026: Leading IP firm for 27 consecutive years (Tier 1 in Patent Disputes, Trademark Disputes, Trademark Prosecution and Copyright & related rights, Tier 2 in Patent Prosecution, and Highly Recommended for IP Transactions)
Singapore Patent Disputes and Singapore Trademark Disputes Firm of the Year (2023 to 2025)
Singapore Trademark Contentious and Singapore Trademark Prosecution Firm of the Year 2022
Singapore Trade Mark Prosecution and Singapore Patent Contentious Firm of the Year 2020
Singapore Trade Mark Prosecution Firm of the Year 2019
Singapore Prosecution IP Firm of the Year 2018
Singapore Contentious IP Firm of the Year 2014 to 2017
IP Stars 2026:
Tony Yeo – Trade Mark Star (13 consecutive years); Patent Star (13 consecutive years)
Yvonne Tang – Trade Mark Star (8 consecutive years); Top 250 Women in IP (2020 to 2022)
Lim Siau Wen – Trade Mark Star (9 consecutive years); Top 250 Women in IP in 2019
Meryl Koh – Patent Star (4 consecutive years); Top 250 Women in IP (2023 to 2025); Rising Star (2021 to 2022)
Patsy Koh – Notable Practitioner
Ruby Tham - Rising Star for 5 consecutive years (2022 to 2026)
asialaw Profiles
Intellectual Property 2025 - Outstanding practice for 11 consecutive years
Tony Yeo – Elite Practitioner (9 consecutive years)
Yvonne Tang – Distinguished Practitioner (2025); Notable Practitioner (2023-2024)
Lim Siau Wen – Distinguished Practitioner (2025); Notable Practitioner (2024)
Meryl Koh – Distinguished Practitioner (2025); Notable Practitioner (2023-2024)
Ruby Tham – Notable Practitioner (2025)
Drew won the Editor’s Choice – Impact Deal and Case of the Year at the Asialaw Awards 2023 for acting in the Riot games v NetEase Interactive Entertainment matter, where Director Meryl Koh act as the lead counsel representing Riot Games.
“D&N don't shy away from difficult or complex cases. They take the time to understand the client's needs, dig into the details and develop a well thought out strategy to meet the client's goals.”
“Professional, knowledgeable, sharp, quick-minded and disciplined. The team did exceedingly well in understanding my case and representing my company.”
World Trade Mark Review 1000
Enforcement and Litigation 2026 – Gold band for 9 consecutive years; Ranked top tier from 2013 to 2017
Prosecution and Strategy 2026 – Gold band for 14 consecutive years
Top Trade Mark filer in Singapore 2020
2026 Endorsed Individuals:
Tony Yeo – Gold band in Enforcement and Litigation (7 consecutive years); Gold band in Prosecution and Strategy (3 consecutive years)
Yvonne Tang – Gold band in Enforcement and Litigation (4 consecutive years); Gold band in Prosecution and Strategy (4 consecutive years); Recommended Lawyer for Transactions (7 consecutive years); Silver band in Enforcement and Litigation & Silver band in Prosecution and Strategy (2020 to 2022)
Lim Siau Wen – Gold band in Enforcement and Litigation for 2 consecutive years (Silver band from 2020 to 2024); Silver band in Prosecution and Strategy (7 consecutive years); Recommended Lawyer for Transactions (7 consecutive years)
Meryl Koh – Silver band in Enforcement and Litigation (4 consecutive years) (Bronze band in 2020-2022)
Ruby Tham – Silver band in Prosecution and Strategy (Bronze band in Prosecution and Strategy from 2020 to 2025); Bronze band in Enforcement and Litigation (5 consecutive years)
Patsy Koh – Silver band in Prosecution and Strategy
“A worldclass legal firm with amazing lawyers and highly skilled resources to take care of matters in a manner only they can”
“A firm with high standard of professionalism and a team of knowledgeable practitioners whom you can rely on.”
World Trademark Review Global Leaders: Private Practice (2025 Edition)
Tony Yeo, Yvonne Tang, Lim Siau Wen
IAM Patent 1000
Litigation 2026 – Gold band for 13 consecutive years
Prosecution 2026 – Gold band for 2 consecutive years; Silver band (2020-2024); Recommended (2014-2019)
Transactions 2024 – Highly Recommended for 3 consecutive years; Recommended for 3 consecutive years (2019-2021)
2026 Endorsed Individuals:
Tony Yeo – Gold band for Litigation; Silver band for Prosecution
Yvonne Tang – Gold band for Prosecution; Highly Recommended for Transactions
Lim Siau Wen – Silver band for Prosecution; Recommended for Transactions
Meryl Koh – Gold band for Litigation; Highly Recommended for Transactions
Rozalynne Asmali – Next Generation Partner (2 consecutive years)
Javier Yeo – Next Generation Partner
“Drew & Napier is a wonderful firm. They have a great breadth of experienced lawyers, which is often essential in complex litigations which may cover patents, data protection, criminal and antitrust law.”
“Drew & Napier has set the bar high for other practices in terms of expertise, billing and customer engagement.”
“We have not yet found another Singapore firm that is comparable to their services.”
IAM Global Leaders (2026 Edition)
Tony Yeo (6 consecutive years), Yvonne Tang (4 consecutive years), Meryl Koh
Asia IP
Intellectual Property 2025 – Tier 1 for 14 consecutive years
Singapore Patent Prosecution Firm of the Year and Singapore Trademark Prosecution Firm of the Year 2025
Singapore Trademark Contentious Firm of the Year and Singapore Trademark Prosecution Firm of the Year 2024
Singapore Copyright Firm of the Year 2023
Singapore Trade Mark Firm of the Year 2012-2016, 2018, 2020, 2022
Singapore Patent Firm of the Year 2017-2019
Patent Prosecution – Tier 1
Patent Contentious – Tier 1
Trade Mark Prosecution – Tier 1
Trade Mark Contentious – Tier 1
Copyright – Tier 1
Asia IP Experts 2025 Endorsed Individuals:
Tony Yeo (5 consecutive years)
Yvonne Tang (5 consecutive years)
Lim Siau Wen (4 consecutive years)
Meryl Koh (3 consecutive years)
Ruby Tham
Benchmark Litigation Asia-Pacific
Intellectual Property 2026 – Tier 1 for 8 consecutive years
Endorsed individuals in Intellectual Property:
Tony Yeo – Litigation Star (7 consecutive years)
Meryl Koh – Litigation Star; Future Star (2023-2025)
Rozalynne Asmali – Future Star
Javier Yeo – Future Star
Lim Siau Wen – Recommended (2019)
Best Lawyers International: Singapore (2027 Edition)
Leading Individuals – Tony Yeo, Yvonne Tang, Lim Siau Wen, Meryl Koh, Cecelia Girvin
The Straits Times - Singapore’s Best Law Firms 2026
Rated full marks (5 stars) for Intellectual Property Law in the Singapore’s Best Law Firms 2026 survey by Singapore’s largest circulating broadsheet, The Straits Times, and international research company, Statista for 6 consecutive years
Lexology Index 2025
Tony Yeo – Recommended Lawyer:
Global Guide: Life Sciences – Patent Litigation 2025 (15 consecutive years)
Global Guide: IP - Patents 2025 (12 consecutive years)
Global Guide: IP - Trademarks 2025 (9 consecutive years)
National Guide: Southeast Asia - Life Sciences 2025 (5 consecutive years)
National Guide: Southeast Asia - Patents 2025 (5 consecutive years)
National Guide: Southeast Asia - Trademarks 2025 (5 consecutive years)
National Guide: Southeast Asia – Trademark Agents & Attorneys 2025 (2 consecutive years)
Yvonne Tang – Recommended Lawyer:
Global Guide: IP - Trademarks 2025 (4 consecutive years)
Global Guide: IP - Patents 2025 (3 consecutive years)
National Guide: Southeast Asia - Trademarks 2025 (3 consecutive years)
Lim Siau Wen – Recommended Lawyer:
Global Guide: IP - Patents 2025 (3 consecutive years)
Global Guide: IP - Trademarks 2025 (3 consecutive years)
National Guide: Southeast Asia - Trademarks 2025 (3 consecutive years)
Meryl Koh – Recommended Lawyer:
Global Guide: IP - Patents 2025 (5 consecutive years)
Global Guide: Life Sciences - Patent Litigation 2025 (5 consecutive years)
National Guide: Southeast Asia - Patents 2025 (5 consecutive years)
National Guide: Southeast Asia - Trademarks 2025
National Guide: Southeast Asia - Life Sciences 2025 (5 consecutive years)
Cecelia Girvin – Recommended Lawyer:
Global Guide: IP - Trademarks 2025
National Guide: Southeast Asia - Trademarks 2025
National Guide: Southeast Asia - Patents 2025
Ruby Tham – Recommended Lawyer:
Global Guide: IP - Copyright 2025 (5 consecutive years)
Global Guide: IP - Trademarks 2025 (2 consecutive years)