Origin & Evolution

Nemo dat quod non habet，拉丁语经典法谚，中文直译为“任何人不得处分他人之物”，是起源于古罗马市民法的物权核心准则，亦是商事交易与商事仲裁中认定财产权属、处分行为效力的根本法理。

Nemo dat quod non habet, a foundational Latin legal maxim literally meaning "One cannot give what one does not own," originates from Roman civil law as the cornerstone of property rights doctrine. It serves as the fundamental principle in commercial transactions and arbitration for determining title and the validity of dispositions.

该原则滥觞于罗马法，后经盖尤斯、乌尔比安等法学家在《学说汇纂》中系统阐释，确立“无所有权则无处分权”的私法底层逻辑。历经千年传承，现已成为大陆法系与普通法系广泛共同认可的普适性法律规则。

Originating in Roman law and later systematized by jurists such as Gaius and Ulpian in the Digest, this maxim has come to embody the foundational principle: "no ownership, no power to dispose." Over the centuries, it has evolved into a universal rule recognized in both civil law and common law traditions.

在现代法治体系中，该原则被多数国家（地区）的民商事立法及国际商事交易规则所采纳。我国《民法典》第240条（所有权权能）、第311条（善意取得制度）共同构成了对该法谚的本土化立法表达：一方面坚守“不得处分他人财产”的核心准则，另一方面通过善意取得制度平衡交易安全。在商事仲裁领域，该原则更是审理财产权属、合同处分、物权纠纷的核心裁判法理。

In modern legal systems, this principle has been incorporated into most national civil and commercial codes as well as international commercial rules. In China, Articles 240 (powers of ownership) and 311 (bona fide acquisition) of the Civil Code reflect its domestic legislative embodiment: upholding the core rule that one may not dispose of another's property while balancing transaction security through the bona fide acquisition doctrine. In commercial arbitration, it is a central doctrine for adjudicating ownership disputes, contractual dispositions, and property-related controversies.

【要义提炼】

Core Principles

Nemo dat quod non habet（任何人不得处分他人之物）的核心要义清晰且严谨：行为人对标的物不享有合法所有权或处分权的，其实施的转让、抵押、质押等处分行为，原则上不能发生物权变动的效力。

The core tenet of Nemo dat quod non habetis clear and absolute: if a party lacks legal ownership or the power to dispose of an object, any act of transfer, mortgage, pledge, or other disposition cannot, in principle, effect a transfer of title.

其一，权利基础是处分前提。

商事主体处分财产，必须以自身享有合法、完整的物权或处分权为前提。无权利基础的处分，仅在债权合同层面可能有效，但在物权变动层面欠缺正当性，这是维护财产归属秩序、防范无权处分的核心准则。

I. Right as the Precondition of Disposition.

A commercial entity must possess lawful and complete title or the power to dispose before disposing of an asset. A disposition without such a right may be valid as an obligation (contractual level) but is ineffective to transfer title—this is the cardinal rule protecting the order of ownership and preventing unauthorized disposition.

其二，原则刚性与例外平衡。

原则上，无权处分不发生物权变动效力；但为保障商事交易安全，《民法典》第311条确立了善意取得制度作为例外——第三人在善意、支付合理对价并依法完成公示（如登记或交付）的情形下，可依法取得物权，从而平衡原权利人与交易第三人的利益。

II. Rigidity of the Rule and Balance of Exceptions.

As a general rule, an unauthorized disposition does not effect a transfer of title. However, to protect the security of commercial transactions, Article 311 of the Civil Code establishes the exception of bona fide acquisition: where a third party acquires the property in good faith, pays reasonable consideration, and satisfies statutory perfection requirements (such as registration or delivery), the third party may thereby acquire valid title, thus balancing the interests of the original owner and the trading counterparty.

其三，贯穿商事全场景约束。

该原则不仅约束有形财产处分，同样适用于股权、债权、知识产权等无形财产权的处置，是一切商事财产流转行为的底线规则。

III. Applicability Across All Commercial Scenarios.

This principle governs not only the disposition of tangible property but also the disposition of intangible rights such as equity interests, claims, and intellectual property. It stands as the fundamental rule for all commercial property transactions.

【商事仲裁实务适配】

Application in Commercial Arbitration

在商事仲裁实践中，该原则是审理买卖合同、建设工程、股权转让、融资租赁、财产抵押等纠纷的核心裁判准则，高频适用于三大实务场景：

In commercial arbitration practice, this principle serves as a core doctrinal basis in disputes involving sales contracts, construction projects, equity transfers, financial leasing, and property mortgages. It is frequently applied in three key scenarios:

一是无权处分行为效力认定。

仲裁庭在审理财产转让、股权处置类纠纷时，首先核查处分人是否享有合法权属。若查实行为人系擅自处分他人财产且无合法授权，将依据此法谚认定该处分不能产生物权变动效力，并结合合同性质与救济路径，对当事人关于履行、确权等相关请求作出相应裁决。

1. Determination of the Effects of Unauthorized Disposition.

When adjudicating property transfers or equity dispositions, arbitral tribunals first verify whether the transferor holds legal title. If the tribunal finds that the transferor disposed of another's property without authorization, it will hold that the disposition is ineffective to transfer title and will render awards regarding specific performance or declaratory relief as to title, in light of the nature of the contract and available remedies.

二是财产权属争议裁判核心。

针对建设工程材料权属、货物所有权、租赁物处置等纠纷，若一方主张物权归属、另一方主张善意取得，仲裁庭以该原则为基础，综合考量是否存在授权、是否善意、对价是否合理、公示是否完成等要件，界定财产归属与违约责任。

2. Adjudication of Property Ownership Disputes.

In disputes over ownership of construction materials, goods, or leased assets, where one party claims title and the other asserts bona fide acquisition, the tribunal relies on this principle to examine factors such as authorization, good faith, reasonableness of consideration, and satisfaction of statutory perfection requirements, thereby defining ownership and liability for breach.

三是违约责任与损失承担划分。

因无权处分导致合同目的无法实现、原权利人追索财产的，处分人需向善意相对方承担违约责任并赔偿合理损失；若相对方在交易中未尽合理注意义务或存在恶意，则应按过错程度自行承担相应损失，仲裁庭据此厘清各方权责。

3. Allocation of Liability for Breach and Damages.

Where an unauthorized disposition frustrates the purpose of the contract and triggers a claim by the original owner, the transferor shall be liable for breach and indemnify the bona fide counterparty. If the counterparty fails to exercise due diligence or acts in bad faith, it shall bear liability for losses proportionate to its fault, allowing the tribunal to clearly delineate the rights and obligations of each party.

【结语】

Conclusion

从罗马法确立的财产秩序准则，到现代商事仲裁的裁判遵循，Nemo dat quod non habet 始终守护着商事财产流转的底线秩序。它既宣示“无权不可为”的交易铁律，又通过善意取得兼顾善意交易方的合法权益。在商事仲裁中坚守这一原则，既是对物权归属的尊重，也是维护商事交易诚信、保障市场秩序的关键所在，为各类财产类商事纠纷提供了清晰的裁判逻辑与法理支撑。

From the property order established by Roman law to the adjudicatory practice of modern commercial arbitration, Nemo dat quod non habethas remained the cornerstone of the order governing commercial property transactions. It declares the iron rule that "what one does not own, one may not dispose of," while accommodating the legitimate interests of bona fide parties through the doctrine of bona fide acquisition. Upholding this principle in commercial arbitration reflects respect for ownership and is vital to maintaining commercial integrity and market order, providing a clear analytical framework and doctrinal foundation for various property-related commercial disputes.