NAVIGATING CONCURRENT CLIENT CONFLICTS

Introduction

Few ethical obligations confront practicing lawyers with greater frequency or higher stakes than the duty to avoid conflicts of interest between current clients. Rule 1.7 of the American Bar Association’s Model Rules of Professional Conduct — the primary rule governing concurrent client conflicts — reflects a foundational principle of legal ethics: a lawyer’s loyalty and independent professional judgment must never be compromised by competing interests. Yet in a complex, relationship-driven profession, potential conflicts arise constantly, and the analysis required to identify, evaluate, and properly resolve them is anything but mechanical.

This article offers a detailed and practical examination of Rule 1.7. It is designed to assist lawyers and their firms in understanding the rule’s structure, applying it with rigor, and establishing the kinds of procedures and habits that allow a practice to grow while protecting clients and avoiding disciplinary exposure. For US businesses that retain law firms, understanding the framework is equally valuable: it illuminates the duties your lawyers owe you and the circumstances in which you may be asked to provide informed consent — or in which your representation may need to be declined altogether.

I. The Structure of Rule 1.7

Rule 1.7 is organized around a two-part framework. The first part — Rule 1.7(a) — identifies the circumstances that constitute a concurrent conflict of interest. The second part — Rule 1.7(b) — establishes the conditions under which a lawyer may nonetheless proceed with conflicted representation after obtaining client consent. These two halves of the rule operate sequentially: a lawyer must first determine whether a conflict exists, and only then ask whether that conflict is consentable.

A. When a Concurrent Conflict Exists: Rule 1.7(a)

Under Rule 1.7(a), a concurrent conflict of interest exists in two distinct situations. The first is direct adversity: the representation of one client will be “directly adverse” to another current client. The second is material limitation: there is a significant risk that the representation of one or more clients will be “materially limited” by the lawyer’s responsibilities to another current client, a former client, a third person, or by a personal interest of the lawyer.

Direct adversity under Rule 1.7(a)(1) captures the clearest cases: opposing parties in litigation, a transactional structure in which one client’s gain is another client’s loss, or any context in which the lawyer’s advocacy for one client would require the lawyer to act against the interests of another existing client. The classic illustration is a law firm that simultaneously represents the plaintiff and the defendant in the same lawsuit — an obvious and non-waivable conflict. But direct adversity extends beyond litigation. A transactional lawyer who represents both the buyer and seller in a commercial acquisition faces direct adversity, as does a lawyer asked to negotiate a contract between two existing clients with competing economic interests.

Material limitation under Rule 1.7(a)(2) captures a broader and often more subtle category of conflict. The question here is not whether the representation is literally adverse, but whether the lawyer’s ability to represent one client with undivided loyalty and full professional independence may be constrained by duties, interests, or obligations running to someone else. The standard is whether there is a “significant risk” of such a limitation — not a certainty. This means the analysis must be forward-looking and probabilistic. A lawyer who represents two co-defendants in separate civil matters arising from the same underlying transaction, for instance, may face a material limitation conflict if the defense positions of the two clients are likely to diverge. Similarly, a lawyer with a personal financial stake in the outcome of a transaction — or a close personal relationship with a party on the other side — must assess whether that interest may, even unconsciously, color professional judgment.

Comment [8] to Rule 1.7 provides helpful guidance on the concept of material limitation, noting that it encompasses conflicts arising not only from multiple current representations but also from the lawyer’s own financial, business, property, or personal interests. The key inquiry is whether the lawyer’s independent judgment on behalf of a client could be impaired. Even a slight but real prospect of impairment may be sufficient to trigger the conflict analysis.

II. The Consentability Analysis: Rule 1.7(b)

Identifying that a conflict exists under Rule 1.7(a) does not automatically end the representation. Rule 1.7(b) provides a pathway to proceed, but only if four cumulative conditions are satisfied. All four must be met; the failure of any one of them means the representation cannot go forward regardless of the clients’ wishes.

A. The Four-Part Test Under Rule 1.7(b)

The first condition is that the lawyer must reasonably believe that she can provide competent and diligent representation to each affected client. This is an objective standard, not merely a subjective aspiration. It requires the lawyer to assess, honestly and with professional rigor, whether she can in fact serve each client fully and independently. The ABA comments make clear that the belief must be reasonable from the perspective of a disinterested lawyer reviewing the situation — not simply from the perspective of a lawyer who wants to retain the business of both clients. If the conflict is of a type or magnitude that competent and diligent representation of all affected clients is genuinely impossible, the representation cannot go forward even with consent.

The second condition is that the representation must not be prohibited by law. Certain conflicts are treated as per se impermissible by statute, court rule, or controlling authority, independent of the Model Rules. Criminal defense practitioners, for example, must be acutely aware of the constitutional dimensions of joint representation: where a conflict of interest in criminal co-representation is established, the right to effective assistance of counsel under the Sixth Amendment may be implicated, and some courts have identified specific circumstances in which the conflict is legally non-waivable. Lawyers should also be attentive to applicable state rules, which may be more restrictive than the ABA Model Rules on this point.

The third condition is that the representation must not involve asserting a claim by one client against another client in the same litigation or other proceeding before a tribunal. This is sometimes referred to as the “positional adversity” bar. Even where both clients have consented, a lawyer may not represent clients on opposing sides of the same lawsuit, arbitration, or administrative proceeding. The rule is categorical in this respect and cannot be waived. Comment [17] reinforces that this prohibition applies even where the clients are on the same side of the “v” if there are cross-claims or other adversarial positions between them.

The fourth and most practically demanding condition is that each affected client must give informed consent, confirmed in writing. This requirement is discussed in detail below, but it deserves emphasis here: consent must be informed, meaning that each client must understand the nature of the conflict, the possible consequences of going forward, and the alternatives available — including the option of retaining separate counsel. Consent that is given without that understanding, or that is secured through omission or inadequate disclosure, does not satisfy the rule.

B. Non-Consentable Conflicts

Some concurrent conflicts are simply non-consentable, regardless of how willing and sophisticated the clients may be. Under Comment [14] to Rule 1.7, a conflict is non-consentable when the interests of the clients are “fundamentally antagonistic to each other.” The most obvious example is when a lawyer is asked to represent both parties in litigation in which their interests are directly opposed. The practical effect is that there are categories of conflicts — particularly those involving head-to-head adversity in the same proceeding — where no amount of consent, disclosure, or client sophistication can make the representation permissible.

Lawyers must also consider whether the conflict, while technically consentable in theory, is effectively non-consentable in practice because no reasonable lawyer could conclude that competent and diligent representation is possible. A lawyer asked to represent the acquiring and target companies in a hostile takeover, for instance, would face such fundamental adversity that even the most careful analysis would almost certainly lead to the conclusion that the first condition of Rule 1.7(b) cannot be satisfied.

III. Informed Consent: What the Rule Actually Requires

The concept of “informed consent, confirmed in writing” is central to Rule 1.7 and demands careful attention. Many conflict-related disciplinary proceedings and malpractice actions arise not from a failure to identify a conflict, but from a failure to obtain consent that is truly informed and adequately documented.

A. What Constitutes Informed Consent

Rule 1.0(e) defines “informed consent” as the “agreement by a person to a proposed course of conduct after the lawyer has communicated adequate information and explanation about the material risks of and reasonably available alternatives to the proposed course of conduct.” Three components are implicit in this definition: disclosure, comprehension, and choice.

Disclosure requires the lawyer to communicate the nature of the conflict clearly — not in legal abstractions, but in language that the client can actually understand and act upon. If two clients share common representation in a business matter where one might need to be sued by the other, the consent letter cannot simply recite that “concurrent conflicts may arise.” It must explain, concretely, what the conflict is, why it exists, what it means for the representation of each client, and what the lawyer will and will not be able to do for each client as a consequence.

Comprehension is the corollary to disclosure. The lawyer bears responsibility not only for conveying information but for taking reasonable steps to ensure the client has understood it. This is particularly important when the client is an individual rather than a sophisticated business entity, or when the conflict is complex. Lawyers should consider whether to recommend that the affected client seek the advice of independent counsel before consenting.

Choice is the third element. The client must genuinely understand that she has alternatives — including the alternatives of objecting to the representation, seeking separate counsel, or agreeing to the representation but limiting its scope. Consent obtained under conditions of informational asymmetry, undue pressure, or inadequate explanation is not meaningful consent.

B. Written Confirmation

Rule 1.7(b)(4) requires that consent be “confirmed in writing.” Rule 1.0(b) defines “confirmed in writing” as either a writing from the client confirming her consent, or a written communication by the lawyer to the client confirming the client’s oral consent. The better practice — and the practice that most clearly protects both the lawyer and the client — is to obtain a signed, written consent letter from each affected client. Such letters should be plain-language, specific, and retained in the client file. Vague engagement letters that bury conflict disclosures in boilerplate do not satisfy the requirement.

The writing requirement serves multiple functions. It protects clients by ensuring they have reflected on their decision and have a record of what they were told. It protects lawyers by providing evidence, in any subsequent disciplinary or malpractice proceeding, that proper disclosure and consent occurred. And it promotes the integrity of the professional relationship by forcing the kind of explicit, deliberate communication that the ethics rules envision.

IV. Common Conflict Scenarios in Practice

Rule 1.7 arises in a remarkably wide range of practice settings. A few recurring scenarios illustrate the kinds of judgments that the rule requires.

A. Joint Representation in Business Transactions

Joint representation — representing multiple parties on the same side of a transaction — is among the most common settings for concurrent conflict analysis. Partners forming a new business may wish to retain a single lawyer to draft the partnership agreement, or a corporate borrower and its principal shareholders may ask the same firm to represent them in a financing transaction. In each case, the lawyer must assess whether the clients’ interests are sufficiently aligned that joint representation is appropriate, and must anticipate whether they may diverge.

The ABA comments caution that common representation of clients whose interests are “generally aligned” may still present material limitation conflicts if the clients’ interests diverge at any point. In the partnership formation context, for example, even clients who begin the transaction with shared goals may develop conflicting interests over the allocation of profits, control rights, or exit provisions. A lawyer undertaking joint representation must assess these risks candidly and must be prepared to withdraw from the joint representation — and potentially from representing any of the affected clients — if the interests sufficiently diverge.

B. Co-Defendants and Co-Plaintiffs in Litigation

Concurrent representation of co-defendants or co-plaintiffs in litigation requires careful analysis. While co-parties often share interests in defeating or prevailing on the opposing party’s claims, they may have materially different interests with respect to allocation of liability, damages, settlement strategy, or contribution claims among themselves. A law firm representing two defendants in a personal injury action, for instance, must consider whether one defendant might seek indemnification from the other, whether their respective exposures differ, and whether a global settlement offer might be more advantageous to one than the other.

These conflicts are not automatically disqualifying. Where the co-parties’ interests are genuinely aligned, joint representation can offer practical efficiencies and may be in the clients’ collective interest. But the analysis must be performed honestly, the consent must be full and informed, and the lawyer must remain vigilant throughout the litigation for developments that might require the joint representation to end.

C. Organizational Clients and Their Constituents

Lawyers representing organizational clients — corporations, partnerships, limited liability companies — must be attentive to the interplay between Rule 1.7 and Rule 1.13, which governs representation of organizations. When a lawyer represents a corporation, the client is the organization, not its officers, directors, shareholders, or employees. This distinction matters for conflict analysis: if the lawyer is simultaneously representing an individual officer in a personal matter, she must carefully assess whether the interests of the individual and the organization may diverge, and whether that potential divergence creates a concurrent conflict under Rule 1.7.

This issue arises with particular frequency in the context of corporate investigations, government enforcement proceedings, and derivative litigation, where the interests of the organization and its constituents may be directly opposed. Lawyers who attempt to represent both the entity and individual employees or officers in such circumstances face serious and often non-consentable conflicts.

D. Positional Conflicts

A sometimes-overlooked category of conflict arises when a lawyer takes a legal position in one matter that is directly contrary to a position she is urging on behalf of a different client in another matter. Comment [24] to Rule 1.7 addresses these so-called “positional conflicts” and notes that they ordinarily do not constitute a conflict of interest because a lawyer is not ordinarily required to take a consistent position in every case. However, a positional conflict may rise to the level of a Rule 1.7 problem where the resolution of a legal issue in one case may create a precedent that directly and adversely affects the interests of a different client. In such cases, the lawyer must consider whether there is a significant risk of material limitation, and must act accordingly.

V. Imputation and Firm-Wide Conflicts

Rule 1.7 does not operate only at the level of the individual lawyer. Under Rule 1.10(a), a conflict of interest under Rule 1.7 is imputed to all lawyers associated in a firm: if one lawyer in the firm has a disqualifying concurrent conflict, all lawyers in the firm are generally prohibited from representing the affected clients, unless an exception applies. This imputation rule reflects the practical reality that lawyers in a firm share confidential client information, economic interests, and professional infrastructure in ways that make their interests effectively shared.

The imputation rule has significant implications for law firms of every size. Large firms with diverse client bases must be especially attentive to conflicts that may arise across different practice groups or offices, where the attorneys involved may not know each other or have any direct communication about the clients they serve. A corporate team’s representation of an acquiring company may create a conflict for the litigation group representing the acquisition target in an unrelated matter — and the firm may not become aware of the conflict until after the acquisition is announced and the damage is done.

Effective conflicts management at the firm level requires robust systems: comprehensive intake procedures, searchable conflicts databases that capture all clients and related parties, and a culture in which every lawyer understands the obligation to run conflict checks and escalate ambiguous situations for review. Many firms also employ legal ethics counsel or designate a responsible partner for conflicts management. These institutional measures are not mere administrative overhead; they are essential professional infrastructure.

It is also worth noting that Rule 1.10 provides for limited exceptions to imputation, most notably when the conflicted lawyer is screened from the representation and the affected clients are given notice. State rules vary significantly on the scope of screening as a remedy for imputed conflicts, and lawyers should be familiar with the specific rules of the jurisdiction or jurisdictions in which they practice.

VI. Withdrawal and Its Consequences

When a concurrent conflict of interest arises or becomes apparent during a representation — whether because it was not identified at the outset or because circumstances have changed — the lawyer must assess what obligations arise. If the conflict is non-consentable, or if consent cannot be obtained, or if the lawyer concludes that she cannot in fact provide competent and diligent representation to all affected clients, she must withdraw.

The consequences of withdrawal in the conflict context are governed by Rule 1.16, which addresses the termination of representation, and by Rule 1.9, which addresses the duties owed to former clients. When a lawyer withdraws from representing one of two conflicted clients, the client who is no longer represented becomes a former client, and the lawyer’s obligations shift accordingly: she owes that former client the duties of confidentiality and loyalty described in Rule 1.9, and may face restrictions on her ability to represent the remaining client in matters that are the same as or substantially related to the representation of the former client.

In some circumstances, a conflict that arises during a representation may require a lawyer to withdraw from representing all affected clients, not merely one of them. This is particularly true where confidential information obtained from one client would necessarily be used against another, or where the lawyer’s ability to maintain confidences conflicts with her duty of candor or her obligation to provide competent representation to the remaining client. The prospect of an across-the-board withdrawal — losing both clients and any related fees — underscores the importance of early and thorough conflict analysis, before the representation is undertaken.

VII. Building Effective Conflict Avoidance Systems

Compliance with Rule 1.7 is not merely a matter of individual judgment exercised case by case. It requires institutional systems and professional habits that make conflict identification reliable and consistent across the firm.

A. Intake Procedures

Every firm should have a formal new matter intake process that systematically collects information about the prospective client, adverse parties, and related entities, and runs that information against the firm’s conflicts database before the representation begins. The intake process should be designed to capture not only the obvious parties but also related persons and entities — subsidiaries, parent companies, principals, and known affiliates — that might generate a conflict with existing clients. Partial or informal conflicts checks are a common source of preventable problems.

B. Engagement Letters

Engagement letters should clearly identify the client, describe the scope of representation, and address any known conflicts and the basis for proceeding. Where a conflict has been identified and consented to, the engagement letter should document the disclosure and obtain the client’s written acknowledgment. Firms that use standard-form engagement letters should review those forms periodically to ensure they address the firm’s current conflict posture and meet the requirements of applicable ethics rules.

C. Ongoing Monitoring

A conflict analysis conducted at the beginning of a representation may not capture conflicts that arise later. Mergers and acquisitions, changes in business relationships, new adverse parties added to litigation, and shifting client interests can all create conflicts during a representation that did not exist at its outset. Lawyers and firms should have systems for monitoring ongoing matters and flagging developments that might give rise to new or previously unrecognized conflicts. Annual or periodic matter reviews, combined with a culture of prompt reporting when conflicts issues arise, are essential components of a sound ethics compliance program.

D. Training and Culture

Systems and procedures are only as effective as the lawyers who operate them. Firms should invest in regular ethics training that addresses conflict of interest issues specifically, including worked examples from the firm’s own practice areas. More importantly, firms should foster a culture in which identifying and escalating a potential conflict is seen as a professional virtue — not a bureaucratic obstacle, a business development problem, or an admission of failure. The lawyer who raises a conflict concern early, before engagements are accepted and relationships are formed, is protecting the firm and its clients. That behavior should be recognized and encouraged.

Conclusion

Rule 1.7 reflects one of the most deeply held commitments of the legal profession: that a lawyer’s loyalty to her client must be genuine, undivided, and protected from corruption by competing interests. In a complex, multi-client practice, that commitment demands careful, systematic, and honest analysis — not occasional attention or box-checking compliance.

The rule’s structure is straightforward. The first step is to ask whether a concurrent conflict exists under Rule 1.7(a) — whether representation would be directly adverse to another current client, or whether there is a significant risk of material limitation. The second step, if a conflict exists, is to determine whether it is consentable under Rule 1.7(b) — whether competent representation of all affected clients is genuinely possible, whether there are no legal bars to the representation, whether no client is on the opposite side of the same tribunal proceeding, and whether all affected clients have given informed, written consent. When these conditions cannot be met, the representation must be declined or terminated.

Beyond individual case analysis, Rule 1.7 compliance requires institutional commitment: robust intake procedures, thorough conflicts databases, careful engagement letters, ongoing monitoring, and a firm culture that treats conflict identification as a priority rather than an inconvenience. Law firms that invest in these systems protect their clients, protect themselves, and honor the foundational values of professional responsibility that the legal profession has long embraced.

This discussion is intended for general educational purposes and does not constitute legal advice. Practitioners should consult applicable state rules, which may differ from the ABA Model Rules, and should seek guidance from qualified ethics counsel when addressing complex or ambiguous conflict situations.