Lun Yaodong Clarence v Dentons Rodyk & Davidson LLP [2025] SGCA 25

Case Details

• Citation: [2025] SGCA 25
• Court: Court of Appeal of the Republic of Singapore
• Decision Date: 11 June 2025
• Coram: Sundaresh Menon CJ (Presiding); Steven Chong JCA
• Case Number: Court of Appeal / Originating Application No 10 of 2025
• Hearing Date(s): 29 April 2025
• Appellants: Clarence Lun Yaodong (also referred to as Mr Lun)
• Respondents: Dentons Rodyk & Davidson LLP
• Counsel for Appellant: Clarence Lun Yaodong and Wan Kok Tang William (Fervent Chambers LLC)
• Counsel for Respondent: Mark Jerome Seah Wei Hsien, Lau Wen Jin, and Lim Chor Yin Aaron (Dentons Rodyk & Davidson LLP)
• Practice Areas: International arbitration; Setting aside of arbitral awards; Solicitor-and-client costs; Stay of court proceedings
• Judgment Length: 10,785 words / approximately 35 pages

Summary

The decision in Lun Yaodong Clarence v Dentons Rodyk & Davidson LLP [2025] SGCA 25 represents a significant clarification of the "two-stage test" for staying court proceedings in favor of arbitration, specifically within the context of solicitor-and-client costs assessments. The dispute arose between Mr. Clarence Lun Yaodong, a solicitor, and his former legal representatives, Dentons Rodyk & Davidson LLP ("Dentons"). Following disciplinary proceedings that resulted in Mr. Lun’s suspension, Dentons sought to assess its bill of costs (BC 123) under the Legal Profession Act 1966. Mr. Lun responded by seeking a stay of these assessment proceedings under section 6 of the Arbitration Act 2001, contending that the underlying Letter of Engagement ("LOE") was invalid due to alleged misrepresentations and that this validity dispute fell within the scope of an arbitration agreement contained in Dentons’ Terms of Business.

The Court of Appeal dismissed the application, refusing permission to appeal the High Court's decision. The central doctrinal contribution of this judgment lies in its application of the framework established in COSCO Shipping Specialized Carriers Co, Ltd v PT OKI Pulp & Paper Mills [2024] 2 SLR 516. The Court emphasized that the determination of whether a court proceeding engages a "matter" subject to arbitration requires a focus on the substance of the dispute rather than its form. In this instance, the Court identified that the "matter" in BC 123 was the quantification of solicitor-and-client costs, which was expressly excluded from the arbitration agreement by a specific "carve-out" clause. The Court held that the validity of the LOE was not an "essential element" of the assessment process, as the court’s power to assess costs exists independently of the contractual validity of the retainer.

Furthermore, the judgment reinforces the principle of party autonomy in the drafting of dispute resolution clauses. The Court noted that the parties had intentionally bifurcated their dispute resolution mechanism: general disputes were to be mediated or arbitrated, while disputes concerning the "amount or non-payment" of bills were reserved for the court’s jurisdiction. By attempting to stay the assessment based on a validity challenge, Mr. Lun was effectively attempting to circumvent this agreed-upon allocation of jurisdiction. The Court’s refusal to grant a stay underscores the judiciary's commitment to holding parties to the specific boundaries of their arbitration agreements, particularly when those agreements contain clear exclusions for specific types of proceedings.

Ultimately, the case serves as a cautionary tale for practitioners regarding the interaction between the court's supervisory jurisdiction over legal fees and the private ordering of arbitration. It clarifies that a challenge to the existence or validity of a contract does not automatically "infect" every related court proceeding so as to mandate a stay, provided the specific "matter" before the court remains outside the scope of the arbitration clause. The decision protects the efficiency of the costs assessment process from being derailed by collateral attacks on the underlying retainer, provided those attacks do not form a necessary prerequisite to the court's exercise of its statutory assessment powers.

Timeline of Events

1. 1 June 2021: A Disciplinary Tribunal (“DT”) is constituted to hear and investigate allegations against Mr. Lun regarding his conduct as a supervising solicitor.
2. 20 September 2021: Mr. Lun instructs Dentons to act for him in the DT proceedings, entering into a Letter of Engagement (LOE) which incorporates Dentons' Terms of Business.
3. 27 September 2021: Dentons issues its first invoice to Mr. Lun.
4. 28 October 2021: Dentons issues its second invoice.
5. 29 October 2021: Dentons issues its third invoice.
6. 11 November 2021: Dentons issues its fourth invoice.
7. 17 December 2021: Dentons issues its fifth invoice.
8. 14 January 2022: Dentons issues its sixth invoice.
9. 22 March 2022: The DT proceedings conclude with a finding that there was cause of sufficient gravity under s 93(1)(c) of the Legal Profession Act for the matter to be referred to the Court of Three Judges (C3J).
10. 10 October 2022: The C3J delivers its decision in Law Society of Singapore v Lun Yaodong Clarence [2023] 4 SLR 638, suspending Mr. Lun from practice for 18 months.
11. 23 December 2022: Dentons issues its final invoice to Mr. Lun.
12. 3 October 2023: Mr. Lun’s then-solicitors (Fervent Chambers LLC) write to Dentons disputing the invoices and alleging misrepresentation regarding the LOE.
13. 9 October 2023: Dentons files BC 123 for the assessment of its bills of costs on a "by-consent" basis under s 120(3) of the LPA.
14. 10 October 2023: Mr. Lun’s solicitors write to Dentons asserting that BC 123 was filed without his consent.
15. 7 December 2023: Mr. Lun files an application to stay BC 123 in favor of arbitration.
16. 30 April 2024: The Assistant Registrar (AR) dismisses Mr. Lun’s application to stay BC 123.
17. 18 September 2024: The High Court Judge dismisses Mr. Lun’s appeal against the AR’s decision.
18. 24 October 2024: Mr. Lun files an application for permission to appeal to the Court of Appeal.
19. 29 April 2025: Substantive hearing of the application before the Court of Appeal.
20. 11 June 2025: The Court of Appeal delivers its judgment dismissing the application.

What Were the Facts of This Case?

The applicant, Mr. Clarence Lun Yaodong, was a practicing solicitor in Singapore who became the subject of disciplinary proceedings initiated by the Law Society of Singapore. These proceedings were triggered by allegations that he had acted as a supervising solicitor for two practice trainees during a period when he was not qualified to do so. In June 2021, a Disciplinary Tribunal (DT) was constituted to investigate these charges. Initially, Mr. Lun was represented by different counsel, but on 20 September 2021, he formally instructed Dentons Rodyk & Davidson LLP ("Dentons") to take over his defense. The engagement was governed by a Letter of Engagement (LOE) dated 20 September 2021, which expressly incorporated Dentons’ standard Terms of Business.

The Terms of Business included a dispute resolution clause at Clause 42. This clause provided that "any dispute arising out of or in connection with this engagement, including any question regarding its existence, validity or termination, shall be referred to mediation at the Singapore Mediation Centre," and failing that, to arbitration under the SIAC Rules. Crucially, Clause 42 contained a specific carve-out: "Except for disputes concerning the amount or non-payment of part or all of our bills..." This exclusion meant that fee-related disputes were intended to remain within the jurisdiction of the Singapore courts rather than being subject to the mediation-arbitration tier.

Dentons represented Mr. Lun throughout the DT proceedings, which culminated on 22 March 2022. The DT found that Mr. Lun’s conduct was of sufficient gravity to warrant a referral to the Court of Three Judges (C3J) under the Legal Profession Act. Following this referral, the C3J eventually ordered Mr. Lun’s suspension from practice for 18 months in October 2022. During the course of the representation and following the conclusion of the C3J matter, Dentons issued a series of seven invoices between September 2021 and December 2022. Mr. Lun initially paid some of these invoices but later ceased payments, leading to a significant outstanding balance.

The relationship between solicitor and client deteriorated significantly after the suspension was imposed. Mr. Lun began to challenge the quality of Dentons' work and the quantum of the fees charged. Through his new solicitors at Fervent Chambers LLC, Mr. Lun alleged that he had been induced to enter into the LOE by misrepresentations made by Mr. Mark Seah of Dentons. Specifically, Mr. Lun claimed that Mr. Seah had misrepresented the firm's expertise and the likely costs of the proceedings. On this basis, Mr. Lun asserted that the LOE was void or voidable and that any dispute regarding the firm's fees should be referred to arbitration pursuant to Clause 42, as it now involved a question regarding the "validity" of the engagement.

In response to the non-payment and the mounting dispute, Dentons filed BC 123 on 9 October 2023. This was an application for the assessment of its solicitor-and-client bills of costs. Dentons initially filed this on a "by-consent" basis under s 120(3) of the LPA, asserting that Mr. Lun had previously requested such an assessment. Mr. Lun immediately contested the "by-consent" status and filed an application to stay BC 123 under section 6 of the Arbitration Act 2001. He argued that because he was challenging the validity of the LOE itself, the court could not proceed with the assessment of costs until the validity issue was resolved by an arbitral tribunal. The Assistant Registrar and subsequently the High Court Judge both refused the stay, leading to the present application for permission to appeal to the Court of Appeal.

What Were the Key Legal Issues?

The primary legal issue before the Court of Appeal was whether the dispute over the validity of the LOE fell within the scope of the arbitration agreement such that the court proceedings for the assessment of costs (BC 123) should be stayed under section 6 of the Arbitration Act 2001. This required the Court to address several sub-issues:

• The "Matter" in Controversy: What was the actual "matter" or "matters" raised in the court proceedings (BC 123)? Was the validity of the LOE an "essential element" of the assessment of costs, or was it a collateral issue?
• Scope of the Arbitration Agreement: Did the carve-out in Clause 42 for "disputes concerning the amount or non-payment... of our bills" encompass the entirety of the assessment process, even if the underlying contract's validity was challenged?
• The Two-Stage Test: How should the court apply the two-stage test from COSCO Shipping Specialized Carriers Co, Ltd v PT OKI Pulp & Paper Mills [2024] 2 SLR 516 to a situation where a party alleges that a contract containing an arbitration clause is invalid?
• Court's Jurisdiction vs. Arbitral Jurisdiction: Does the court’s statutory and inherent jurisdiction to assess a solicitor's costs under the Legal Profession Act override or operate independently of a contractual agreement to arbitrate disputes regarding the validity of the retainer?

How Did the Court Analyse the Issues?

The Court of Appeal began its analysis by reaffirming the "two-stage test" established in COSCO Shipping Specialized Carriers Co, Ltd v PT OKI Pulp & Paper Mills [2024] 2 SLR 516. Under this framework, the court must first identify the "matters" in the court proceedings and then determine whether those matters fall within the scope of the arbitration agreement. The Court emphasized that a "matter" is any issue that is an "essential element" of the claim or a "relevant defense" (at [26]).

In applying the first stage, the Court scrutinized the nature of BC 123. Mr. Lun argued that the validity of the LOE was an essential element because if the LOE was void for misrepresentation, there would be no "contract" to assess costs under. However, the Court rejected this characterization. It held that the "matter" in BC 123 was the quantification of the fees Dentons was entitled to receive for the work done. The Court observed that the power to assess costs does not depend solely on the existence of a valid contract. Even if a retainer is found to be invalid, a solicitor may still be entitled to remuneration on a quantum meruit basis or through the court’s inherent jurisdiction to ensure fair compensation for professional services rendered.

The Court relied on Kosui Singapore Pte Ltd v Thangavelu [2016] 2 SLR 105 to explain the nature of taxation (now assessment). It noted that assessment is a quantification process where the court, acting in its supervisory capacity, determines what is a "fair and reasonable" sum for the solicitor’s work. The Court stated at [37]:

"the determination of the validity of the LOE is not an 'essential element' of resolving the dispute over the quantum of Dentons’ fees... the court’s power to assess a solicitor’s bill of costs is not strictly dependent on the existence of a valid and enforceable contract between the solicitor and the client."

Moving to the second stage—whether the matter falls within the arbitration agreement—the Court focused on the interpretation of Clause 42. It noted that the clause was a "split" or "bifurcated" dispute resolution provision. While it generally referred disputes to mediation and arbitration, it explicitly carved out "disputes concerning the amount or non-payment of part or all of our bills." The Court found that the parties had a clear objective intention to have fee disputes resolved by the court. Mr. Lun’s attempt to characterize the dispute as one of "validity" (which would go to arbitration) was seen as an attempt to "bootstrap" a fee dispute into the arbitration clause.

The Court also distinguished the case of [2013] SGHCR 18 ("Riaz"). In Riaz, a stay was granted because the very existence of the retainer was in doubt, and the court held that taxation was an inappropriate forum to decide whether a solicitor had been instructed at all. However, the SGCA noted that in the present case, there was no dispute that Dentons had acted for Mr. Lun and that work had been performed. The challenge was to the validity of the LOE based on misrepresentation, which is a different species of dispute than the total absence of a retainer. The Court held that an assessment officer is perfectly capable of considering whether certain costs should be disallowed or reduced due to the solicitor's conduct, even if the broader validity of the contract is challenged elsewhere.

Furthermore, the Court addressed the risk of "fragmentation" of proceedings. While courts generally try to avoid fragmentation, the SGCA noted that in this case, any fragmentation was a direct result of the parties' own agreement in Clause 42. By agreeing to a carve-out for fee disputes, the parties had accepted that different aspects of their relationship might be resolved in different fora. The Court cited Asiana Airlines, Inc v Gate Gourmet Korea Co, Ltd and others [2024] 2 SLR 279 to emphasize that the risk of fragmentation cannot override the clear language of an arbitration agreement.

Finally, the Court considered the procedural history, noting that Mr. Lun had repeatedly asked Dentons to file for assessment. This conduct reinforced the conclusion that the parties understood and intended for the court to handle the quantification of fees. The Court concluded that the High Court Judge was correct to find that the "matter" in BC 123 was the assessment of costs, which fell squarely within the carve-out of Clause 42 and outside the scope of the arbitration agreement.

What Was the Outcome?

The Court of Appeal dismissed Mr. Lun’s application for permission to appeal. The Court found that the proposed appeal did not raise any arguable point of law of general importance, nor did it involve any serious injustice that would warrant the intervention of the apex court. The operative order of the Court was as follows:

"we refuse permission to appeal and dismiss the application." (at [4])

As a result of this dismissal, the stay of the court proceedings in BC 123 was refused. The assessment of Dentons’ bills of costs will proceed in the General Division of the High Court. The Court’s decision effectively means that the challenge to the validity of the LOE (based on alleged misrepresentation) will not act as a bar to the court determining the reasonable quantum of fees owed to Dentons for the professional services they provided during the disciplinary proceedings.

Regarding costs for the application itself, the Court followed the general principle that costs follow the event. The Court ordered Mr. Lun to pay Dentons the costs of the application. The quantum was fixed as follows:

"The costs of the application are fixed in the aggregate sum of $8,000, to be paid by Mr Lun to Dentons." (at [64])

This aggregate sum of $8,000 was deemed appropriate for an application of this nature, considering the complexity of the arguments raised regarding the intersection of the Arbitration Act 2001 and the Legal Profession Act.

Why Does This Case Matter?

This case is of paramount importance to the Singapore legal landscape for several reasons, primarily concerning the limits of arbitration agreements and the protection of the court's supervisory jurisdiction over the legal profession. First, it provides a robust application of the COSCO Shipping two-stage test. By clarifying that a "matter" must be an "essential element" of the claim, the Court has provided a shield against tactical attempts to stay court proceedings by raising collateral issues that technically fall within an arbitration clause but are not necessary to resolve the primary dispute before the court.

Second, the judgment clarifies the relationship between contractual retainers and the statutory right to assess costs. Practitioners often assume that if a contract is challenged, all proceedings related to that contract must stop. The SGCA has corrected this view in the context of solicitor-and-client costs. It has affirmed that the court's power to ensure solicitors are fairly paid (and clients are not overcharged) is a "sui generis" jurisdiction that can operate even in the absence of a valid contract. This ensures that solicitors cannot be deprived of all remuneration simply by a client alleging misrepresentation, nor can clients avoid the court's scrutiny of fees by hiding behind an arbitration clause that was never intended to cover fee quantification.

Third, the case highlights the critical importance of precise drafting in dispute resolution clauses. Dentons’ use of a specific carve-out for "amount or non-payment" of bills was the decisive factor. Without this carve-out, the entire dispute—including the fee assessment—might have been stayed for arbitration. This serves as a model for law firms and other service providers who wish to utilize arbitration for general liability or professional negligence claims but prefer the efficiency and expertise of the court’s assessment/taxation office for fee disputes.

Fourth, the decision addresses the doctrine of "separability" and its limits. While an arbitration agreement is generally separable from the main contract, this case shows that the scope of that agreement is still governed by the parties' expressed intentions. The Court refused to allow the "validity" portion of the arbitration clause to swallow the "fee dispute" carve-out. This maintains a balanced approach to party autonomy, ensuring that both the inclusionary and exclusionary parts of an arbitration agreement are given full effect.

Finally, the judgment reinforces the Court of Appeal's role in maintaining the integrity of the legal profession. By refusing to stay the assessment, the Court ensured that the dispute over Mr. Lun’s fees would be resolved in a transparent, court-supervised process. This is consistent with the public policy objective of maintaining public confidence in the legal profession by ensuring that fee disputes are handled by an independent judicial officer (the Registrar) rather than behind the closed doors of private arbitration, especially when the parties have specifically carved out such disputes for the court.

Practice Pointers

• Draft Specific Carve-outs: When drafting arbitration clauses in engagement letters, practitioners should explicitly carve out disputes related to the "amount, assessment, or non-payment of fees" if they wish to retain access to the court’s taxation/assessment machinery.
• Substance Over Form: When seeking or resisting a stay under s 6 of the Arbitration Act 2001, focus on whether the disputed issue is an "essential element" of the court claim. A collateral challenge to a contract's validity may not be enough to stay a proceeding that has an independent statutory or inherent basis.
• Understand the Nature of Assessment: Remember that the court’s jurisdiction to assess solicitor-and-client costs is supervisory and exists to ensure "fair and reasonable" remuneration. It is not strictly a contract law claim and can proceed even if the underlying retainer is voidable.
• Beware of Tactical Fragmentation: While courts generally dislike fragmented proceedings, they will enforce them if that is what the dispute resolution clause provides. Practitioners should warn clients that split clauses (some issues to court, some to arbitration) can lead to parallel proceedings and increased costs.
• Consistency in Conduct: The Court will look at the parties' prior conduct. If a party has repeatedly requested or consented to a specific forum (like the court's assessment office), it will be much harder for them to later argue that the matter must be stayed for arbitration.
• Quantum Meruit Availability: Even if a Letter of Engagement is successfully challenged in arbitration, solicitors should be aware that they may still seek remuneration in court on a quantum meruit basis for work actually performed.
• Standard of Review for Permission to Appeal: This case reaffirms that permission to appeal will not be granted unless there is a truly arguable point of law of general importance. Mere disagreement with a Judge’s application of a settled test (like the COSCO test) is insufficient.

Subsequent Treatment

As this is a 2025 decision from the Court of Appeal, there is no recorded subsequent treatment in the extracted metadata. However, the ratio of the case—that a dispute over the validity of a retainer is not an "essential element" of a costs assessment proceeding—is now a binding precedent for the General Division and the State Courts. It effectively limits the scope of Riaz (HCR) [2013] SGHCR 18 to cases where the very existence of instructions is denied, rather than cases where a signed retainer is challenged on grounds of voidability like misrepresentation.

Legislation Referenced

• Arbitration Act 2001 (2020 Rev Ed): Section 6, Section 6(1), Section 6(2).
• International Arbitration Act 1994 (2020 Rev Ed): Section 6, Section 6(2).
• Legal Profession Act 1966 (2020 Rev Ed): Section 120(3).
• Legal Profession Act (Cap 161, 2009 Rev Ed): Section 93(1)(c).

Cases Cited

• Applied: COSCO Shipping Specialized Carriers Co, Ltd v PT OKI Pulp & Paper Mills [2024] 2 SLR 516
• Considered / Referred to:
  • bin Abbas (through his deputy and litigation representative, Salbeah bte Paye) [2013] SGHCR 18
  • Gulf Hibiscus Ltd v Rex International Holding Ltd and another [2017] SGHC 210
  • Law Society of Singapore v Lun Yaodong Clarence [2023] 4 SLR 638
  • Zhou Wenjing v Shun Heng Credit Pte Ltd [2023] 4 SLR 1599
  • CSY v CSZ [2022] 2 SLR 622
  • Moveon Technologies Pte Ltd v Crystal-Moveon Technologies Pte Ltd [2024] 6 SLR 653
  • Tomolugen Holdings Ltd and another v Silica Investors Ltd and other appeals [2016] 1 SLR 373
  • Asiana Airlines, Inc v Gate Gourmet Korea Co, Ltd and others [2024] 2 SLR 279
  • Kosui Singapore Pte Ltd v Thangavelu [2016] 2 SLR 105
  • DJA v DJB [2024] 5 SLR 815
  • Rex International Holding Ltd and another v Gulf Hibiscus Ltd [2019] 2 SLR 682
  • Partners v Kuntjoro Wibawa [2014] 3 SLR 225
  • Anupam Mittal v Westbridge Ventures II Investment Holdings [2023] 1 SLR 349
  • Koh Kim Teck v Shook Lin & Bok LLP [2021] 1 SLR 596
  • Arbiters Inc Law Corp v Arokiasamy Steven Joseph and another [2024] 2 SLR 844
  • Law Society of Singapore v Andre Ravindran Saravanapavan Arul [2011] 4 SLR 1184
  • Marisol Llenos Foley v Harry Elias Partnership LLP [2022] 3 SLR 585
  • Gomba Holdings (UK) Ltd and others v Minories Finance Ltd and others (No 2) [1993] Ch 171

Source Documents

• Original Judgment PDF (eLitigation)
• Case Summary on eLitigation