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Lim Siau Wen

Director, Intellectual Property

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Practice Areas

Qualifications

  • LL.B. (Hons), National University of Singapore (1998)
  • Admitted to the Singapore Bar (1999)
Overview

Siau Wen is an Intellectual Property specialist with more than 25 years of experience in contentious and non-contentious IP practice.

She manages the global trade mark, design and and patent portfolios of foreign and local multinational clients from a wide range of industries. She also advises clients on general IP and regulatory matters as well as issues of gaming, product advertising, labeling, and branding strategy.

Siau Wen handles various facets of IP commercial transactions. They include due diligence; negotiations; and drafting and reviewing licensing, franchising, sale and transfer, confidentiality, distributorship, credit facility and consultancy agreements relating to IP rights.

Siau Wen is active in the area of Intellectual Property litigation and enforcement. She focuses on disputes involving trade marks, copyright, domain names, designs, and confidential information.

She is also a Certified Patent Valuation Analyst.

Siau Wen has handled many notable matters. Here are just a few:

  1. Louis Vuitton Malletier v. Megastar Shipping Pte Ltd [2017] SGHC 305 – Acted in a landmark trademark infringement matter that involved the transshipment of counterfeit merchandise through the Singapore ports.
  2. Starbucks Corporation v Morinaga Nyugyo Kabushiki Kaisha (Morinaga Milk Industry Co. Ltd) [2017] SGIPOS 18 – Successfully defended Morinaga Milk in a trade mark opposition by Starbucks Coffee on the grounds of similar marks and that the former’s mark would deceive the public as to the geographical origin of the goods.
  3. Weir Warman Ltd v Research & Development Pty Ltd [2007] 2 SLR(R) 1073 - Assisted in the successful defence of Weir Warman Ltd in the High Court against a trade mark invalidation and revocation action that was based on allegations of bad faith and non-use.
  4. Represented a lender in a Credit Facility Agreement, and Collateral & Guarantee Agreement where the collateral comprising of key intellectual property assets was valued in excess of US$60 million.  
  5. Represented a Singapore-based private education institution in granting a licence of its global IP assets to a joint venture entity that was setting up educational facilities in the Middle East.

The Legal 500 Asia Pacific
Intellectual Property 2025 - Leading Partner
Recommended lawyer from 2020 to 2024, and 2018

“Siau Wen always give us clear and practical recommendations and advice so that we can make a fast and right decision.”

“Lim Siau Wen and her team are professional and go out of their way to ensure that our work is done, completed in a timely manner and ensure that timelines and deadlines are not missed. Their attention to detail, on top of their value-added services, stand them miles ahead of their contemporaries when it comes to the work that are entrusted to them.”

Sources say that Siau Wen “possess strong legal knowledge in patent law, and offer advice from a commercially pragmatic perspective.”

“Lim Siau Wen is noted for managing trade mark and patent portfolios.”

Managing IP
Voted as IP Star 2025 – Trade mark Star for 8 consecutive years
Voted as Top 250 Women in IP 2019

World Trade Mark Review 1000 
Enforcement and Litigation 2025 – Gold band; Silver band from 2020 to 2024; Recommended Lawyer (2018 and 2019)
Prosecution and Strategy 2025 – Silver band for 6 consecutive years
Transactions 2025 – Recommended Lawyer for 6 consecutive years

“Out of all the lawyers that I have dealt with, engaged and instructed, Siau Wen is undisputedly one of whom I would never hesitate to recommend. Over and above the legal knowledge, her experience and insights have been instrumental. Siau Wen value-adds to us by taking the extra step to study, comprehend and understand our businesses.”

Sources said clients “entrust her with the filing and registration of trademarks and ask her to comment on goods specifications based on Singapore trademark practice prior to filing trademarks” and rely on her to handle “difficult pathways for product classification”.

“Siau Wen doesn’t beat around the bush – her guidance is to the point, easy to digest and implement and reflective of an incredible knowledge of trademark law. What is more, she is responsive, quick and efficient and completes her work at a very reasonable cost.”

Siau Wen “is not only pleasant, but thorough and reliable in her work”. She can be relied on to “provide practical business advice with respect to IP matters”.

“Also highly recommended is Lim Siau Wen, a versatile operator who strikes a fine balance between minimising cost and maximising results.”

“Well-versed in all aspects of trademark protection, Siau Wen dispenses practicable and commercially sensible advice and always finds ways to add value. She makes everything easier and follows up proactively to ensure you are fully protected.”

“Dextrously crossing between the contentious/non-contentious practices is Siau Wen, who blends fine-milled regulatory knowledge into her practice.”

IAM Patent 1000
Prosecution 2025 – Silver; Recommended Lawyer (2022 to 2024, 2019); Silver band in 2020 and 2021
Transactions 2025 – Recommended Lawyer for 6 consecutive years

“All-rounder Siau Wen skilfully takes on patent prosecution and licensing matters.”

“Household names place their full confidence in the legal and technical know-how of Siau Wen to tackle their IP issues swiftly.”

“Siau Wen takes on both contentious and non-contentious IP briefs, but on the patent side it is her prosecution transactions work that stands out.”

“Siau Wen is a great business partner.”

Sources mention that Siau Wen is “very responsive” and “does a great job at a competitive rate”.

“On the non-contentious front, Siau Wen Lim tends to the global IP portfolios of foreign and local multinationals. As certified IP valuation analyst, [she is] also the best lawyer to consult about IP commercialisation.”

asialaw Leading Lawyers 
Intellectual Property 2025 – Distinguished Practitioner; Recognised as Notable Practitioner in 2022 and 2024

“Professional and sharp.”

“She is knowledgeable in the law and responsive when there are queries.”

“Siau Wen is experienced in intellectual property matters and is responsive. She offers practical advice to our legal questions.”

Clients praise Siau Wen for her “familiarity with law and procedures, as well as diligence.”

Asia IP Experts 
Identified as a leading IP lawyer in Singapore in 2024 for 2 consecutive years
Leading individual in Trade Mark for 6 consecutive years (2013 to 2018)

Lexology Index (formerly Who’s Who Legal)
Thought Leaders Guide: IP – Trademarks 2025 – Thought Leader
IP - Trademarks 2025 – Thought Leader
IP - Patents 2025 – Recommended Lawyer
Southeast Asia - Trademarks 2025 – Recommended Lawyer
 
World Trademark Review Global Leaders: Private Practice (2025 Edition)
Identified as one of Singapore’s foremost trademark experts

Benchmark Litigation Asia-Pacific 2019 edition
Recommended lawyer for Intellectual Property

Sources say that Siau Wen is a “principal of the firm and is doing well in all aspects”.

Singapore Business Review 
Singapore’s 40 most influential lawyers aged 40 and under in 2015 – Listed lawyer

  • Asst. Treasurer, Exco, The International Association for the Protection of Intellectual Property
  • Assessor, Panel of Assessors for COVID-19 Temporary Relief, Ministry of Law
  • Chair, Non-Traditional Trade Marks Global Advocacy Sub-Committee, International Trademark Association
  • Member, International Trademark Association
  • Member, Asian Patent Attorneys Association (APAA)
  • Member, Anti-Counterfeiting Committee, APAA
  • Member, INTA Non-Traditional Marks Asia Pacific Subcommittee
  • Member, Law Society of Singapore
  • Member, Singapore Academy of Law