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Intellectual Property

Drew & Napier is the largest Intellectual Property practice in Singapore. We are leaders in the field, and our lawyers are regularly instructed in high profile matters.

We have expertise across the range of contentious and non-contentious IP work, and we represent a broad selection of renowned clients from across industries. 

Our department accounts for approximately 20% of all patents filed in Singapore. 

Prestigious industry publications like Chambers Asia, Legal 500 and Managing Intellectual Property consistently confirm our leadership with Tier 1 rankings in IP.

Practice Areas

Trade marks, Patents and Designs

In Singapore, Indonesia and Brunei we secure 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 all aspects of IP.

Intellectual Property Litigation

Our litigation team handles all aspects of intellectual property litigation, for example:

  • Applying for 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, 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.


Chambers Asia-Pacific
Intellectual Property 2017 - Band 1 for 10 consecutive years

Senior Statesman:
Morris John

Leading Individuals:      
Dedar Singh Gill
Tony Yeo

"They are very ready to discuss our business needs, and able to adapt and provide advice."

"They know their stuff, are professional and pretty good on new legal changes."

"They are really lovely to deal with; very hospitable and well organised. Everything you would expect from a top firm."

"A strong IP practice that provides sound and practical advice." 

“The team is very responsive, knowledgeable and hard-working. Their grasp of details is impressive.”

“They are a very strong team, especially
when it comes to contentious IP work.”

The Asia Pacific Legal 500
Intellectual Property 2017 - Tier 1 for 18 consecutive years

Leading Lawyers 2017:
Dedar Singh Gill
Tony Yeo

Recommended Lawyers 2016:
Lim Siau Wen
Yvonne Tang

Next Generation Lawyer 2017:
Meryl Koh

"Drew & Napier is the best there is when it comes to litigation.”
“The lawyers at Drew & Napier LLC excel in their ‘knowledge of local legislation’ and litigation.”
"[Dedar] is analytical, methodical, and thinks outside the box."
“[Cecelia] is flexible in responding to clients’ needs.”
“[Tony] is excellent and experienced.”
“Newly promoted directors Yvonne Tang and Lim Siau Wen are up and coming.”
“The ‘meticulous’ Meryl Koh is a ‘great strategist’.”

Managing Intellectual Property

World IP Survey 2016: Singapore - Leading IP firm for 17 consecutive years

Singapore Contentious IP Firm of the Year 2014-2017 [4 consecutive years]
Singapore IP Firm of the Year 2013

Patent Prosecution – Tier 1
Patent Contentious – Tier 1
Trade mark Prosecution – Tier 1
Trade mark Contentious – Tier 1
Copyright – Tier 1

IP Stars 2016:
Dedar Singh Gill – Enforcement
Tony Yeo – Enforcement

“Definitely, a prominent team for any type of IP work”

“Tony [Yeo] is charming, knowledgeable, and has a knack of explaining things simply and in the context of the overall strategy. He is an effective litigator and is incisive in cross-examinations."

Asia IP 
Intellectual Property 2016 – Tier 1 [5 consecutive years]

Singapore Trade Mark Firm of the Year 2012-2016 

Copyright - Tier 1
Patent Prosecution – Tier 1
Patent Contentious – Tier 1
Trade Mark Prosecution – Tier 1
Trade Mark Contentious – Tier 1

“Drew & Napier is a go-to firm for contentious IP work”
“Dedar Singh Gill is an outstanding individual.”
“Tony Yeo offers creative lawyering and business acumen.”

Asia IP Experts 2016 Endorsed Individuals:

Dedar Singh Gill – Patents, Trade Mark, Litigation
Tony Yeo – Patents, Enforcement, Litigation, Pharma & Biotech
Cecelia Girvin – Patents, Trade Mark, Copyright, Litigation
Morris John – Patents, Trade Mark, Copyright, Litigation
Lim Siau Wen – Trade Mark

Asian Legal Business Magazine
Intellectual Property rankings 2016 (Singapore) – Tier 1 for 4 consecutive years

Asialaw Profiles
Intellectual Property 2016 - Outstanding practice
Intellectual Property 2013-2015 - Highly recommended practice

Leading Lawyers:
Dedar Singh Gill
Tony Yeo

“Headed by director Dedar Singh Gill, the IP team also benefits from the expertise of directors Tony Yeo.

The Asian Lawyer
Emerging Markets Awards 2015
Dedar Singh Gill – Intellectual Property Lawyer of the Year

Who’s Who Legal
Intellectual Property 2016

Dedar Singh Gill – Recommended individual for Trade Marks
Tony Yeo – Recommended individual for Patents and Life Sciences

World Trade Mark Review 1000 2017
Trade mark enforcement & litigation (Top tier)
Prosecution & strategy (Gold band) 

Endorsed Individuals:
Dedar Singh Gill – Enforcement and Litigation
Tony Yeo – Enforcement and Litigation
Lim Siau Wen – Enforcement and Litigation
Yvonne Tang – Prosecution and Strategy
Cecelia Girvin – Prosecution and Strategy 

“The balance in the team is amazing – to be so strong at both ends of the trademark scene is exceptional.”

Elite litigator Dedar Singh Gill has over 30 years’ experience, and complementary expertise in copyright and designs. He has recently been representing Petra Foods and Delfi Singapore before the Singapore Court of Appeal.

Tony Yeo is another weapon in the team’s contentious arsenal; he is president of the Singapore group of the International Association for the Protection of Intellectual Property.

Finally, the much-respected Yvonne Tang is an online virtuoso who specialises in recovery claims under the Singapore Domain Name Dispute Resolution Policy.

Joining the WTR 1000 for 2017, Lim Siau Wen orchestrates successful anti-counterfeiting raids on behalf of some of the world’s most recognisable brands.

Meticulous portfolio manager Cecelia Girvin shores things up on the non-contentious side.

IAM Patent 1000 2016

Litigation and transactions – Gold band
Prosecution – Recommended

Endorsed Individuals:
Dedar Singh Gill – litigation and transactions 
Tony Yeo – litigation and transactions
Cecelia Girvin – prosecution

With quality “on an equal footing with the big global legal brands”, local player Drew & Napier casts a long shadow on Singapore’s patent landscape. 
“IP authority” and division head Dedar Singh Gill takes pole position in Singapore’s most influential court cases. 
Consultant and all-rounder Cecelia Girvin dispenses invaluable, commercially on-point advice to the group’s host of household-name clients. 
Life sciences captain Tony Yeo “keeps competitors on their toes” in hotly contested disputes between big pharma combatants.
“Drew & Napier is a name that comes up time and time again when people discuss Singapore’s greatest firms.”

Best Lawyers International
Intellectual Property 2016

Leading Individuals:
Morris John (Lawyer of the Year)
Dedar Singh Gill