MEXICO Law and Practice Contributed by: Carlos de la Garza, Raúl Acosta and Enrique Tamez, De la Garza & Acosta Abogados, S.C.
4. Coverage Disputes 4.1 Evolving Trends in Coverage Disputes Coverage Decisions Under Greater Scrutiny Coverage disputes increasingly extend beyond policy interpretation to contract formation and claims han- dling. In particular, insurers may face difficulties relying on exclusions unless they can prove that the applica- ble general conditions were effectively delivered or made available. Insurers are therefore placing greater emphasis on documenting policy issuance and the factual and technical basis for coverage decisions, while insureds increasingly challenge both the denial and the process leading to it. Moral and Punitive Damages Another significant trend is the growing inclusion of claims for moral and punitive damages alongside con- tractual policy benefits. Recent Supreme Court juris- prudence has recognised that an unjustified breach of insurance protecting life, health or physical integrity may give rise to moral damages and, in cases involv- ing a sufficiently high degree of reprehensibility, puni- tive damages. These remedies remain exceptional, but they materially increase the potential exposure associated with certain coverage disputes. Greater Reliance on Technical Evidence Coverage disputes are also becoming increasingly evidence-driven, particularly in health, property and liability insurance. Medical, radiological, engineering, accounting and other expert evidence may help tribu- nals to determine issues such as causation, pre-exist- ing or degenerative conditions and quantum. Both sides therefore have a greater incentive to develop their technical and documentary positions before liti- gation begins. 4.2 Policy Wordings and Interpretation Developments Interpretation and Ambiguity Mexican courts generally interpret policies accord- ing to their literal wording where the terms are clear and leave no reasonable doubt as to their meaning. Insurance policies, however, are frequently contracts of adhesion, and courts increasingly apply objective
and policyholder-protective interpretative principles where the wording is ambiguous. Exclusions and Endorsements Exclusions are subject to particularly close scrutiny. Mexican law requires covered risks, exclusions, limi- tations, deductibles and other material terms to be expressed clearly and precisely, and risks are general- ly treated as covered unless they have been expressly and precisely excluded. Even a clearly drafted exclusion may be ineffective if the insurer cannot demonstrate that the relevant gen- eral conditions were actually delivered or made effec- tively accessible to the policyholder. Moreover, courts may decline to enforce exclusions that conflict with mandatory law or undermine the essential purpose of the coverage. For example, the Supreme Court has held that an exclusion of moral damages from com- pulsory motor liability insurance is unconstitutional, reasoning that liability coverage must respond to both material and moral damages, up to the insured limit. Endorsements are generally read together with the policy and general conditions as part of the contrac- tual framework. Particular care is therefore required where an endorsement expands, restricts or modi- fies standard coverage, as inconsistencies between policy documents can themselves become a source of dispute. 4.3 Cyber and Technology-Related Coverage Issues Emerging Coverage Issues Cyber-insurance remains a developing line in Mexico and there is not yet a substantial body of reported case law addressing cyber-specific coverage dis- putes. Nevertheless, increasing dependence on digital infrastructure and the frequency of cyber incidents are creating greater potential for disputes concerning ran- somware, data loss or restoration, business interrup- tion, privacy breaches and liability arising from com- promised systems or third-party service providers. A recurring issue is likely to be whether a loss falls within dedicated cyber coverage or instead engages traditional property, liability or crime policies. Ques- tions of causation and aggregation may become
181 I NSURANCE L I T IGATI O N 2026
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