Definition
The principle that no one can transfer a better title to property than they themselves possess — a seller who does not own goods cannot confer ownership on a buyer, regardless of the buyer's good faith.
Nemo dat quod non habet (Latin: 'no one gives what they do not have') is the foundational rule of property transfer: a seller can only transfer what they own. If A steals goods from O and sells them to B, B does not become the owner — A had no title to transfer. This protects original owners from having their property permanently taken without consent. However, significant statutory exceptions exist in commercial contexts to protect bona fide purchasers for value — without these exceptions, commercial certainty would be severely hampered. Section 27 of the Sale of Goods Act, 1930 codifies the nemo dat rule; subsequent sections provide the exceptions.
Statutory Definition
Section 27, Sale of Goods Act, 1930: 'Subject to the provisions of this Act, where goods are sold by a person who is not the owner thereof and who does not sell them under the authority or with the consent of the owner, the buyer acquires no better title to the goods than the seller had, unless the owner of the goods is by his conduct precluded from denying the seller's authority to sell.' Exceptions (Sections 28-30 SGA): estoppel, mercantile agent, seller in possession after sale, buyer in possession after agreement to buy, voidable title in the market overt.
Etymology & Origin
Latin 'nemo' (no one, nobody) + 'dat' (gives, from 'dare' — to give) + 'quod' (what, which) + 'non' (not) + 'habet' (has, from 'habere' — to have). 'No one gives what they do not have' — the seller can only give what they possess; they cannot give what they lack.
Full Legal Analysis
Nemo Dat Quod Non Habet: You Cannot Give What You Don’t Have
The nemo dat rule is property law’s protection of owners: a thief cannot clean their own title by selling stolen goods to an innocent purchaser. The original owner retains their right to the property regardless of how many times it has changed hands. But the rule creates hardship for bona fide purchasers — those who paid fair value in good faith and have no way of knowing the seller had no title. The law balances these interests through a set of statutory exceptions.
Key Exceptions to Nemo Dat
(a) Estoppel (Section 27 SGA): If the owner's own conduct (representation, negligence) led the buyer to believe the seller had authority, the owner is estopped from asserting the nemo dat rule. (b) Mercantile agent (Section 28 SGA): Where a mercantile agent (factor) sells goods with the consent of the owner in the ordinary course of business, the buyer acquires good title even if the agent acted beyond their authority. (c) Seller remaining in possession (Section 30(1) SGA): Where a seller sells goods but remains in possession and subsequently sells again to a second buyer who takes delivery without notice of the first sale, the second buyer gets good title. (d) Buyer receiving possession before property passes (Section 30(2) SGA): Where a buyer obtains possession before the property in goods has passed to them, and resells to a third party who takes in good faith, the third party acquires good title.
Nemo Dat in Land Law
In land law, the Transfer of Property Act, 1882 (Section 43) provides a partial exception to nemo dat: if a transferor (who has no title) subsequently acquires title, that acquired title feeds the prior transfer — the beneficiary of the transfer from a person who subsequently acquires title gets good title by the 'feeding the estoppel' doctrine. This exception allows certain prior transfers to become valid when the transferor later acquires the property they had previously purported to transfer.
“Nemo dat is property’s fundamental truth: you cannot give away what you do not own. But in commerce, the certainty of title is as important as the original owner’s right. The exceptions represent the law’s compromise: where the original owner’s conduct contributed to the problem, or where commercial necessity demands it, the bona fide purchaser’s interest prevails.”
This Term in Indian Statutes
Sale of Goods Act, 1930, 1930
"Subject to the provisions of this Act, where goods are sold by a person who is not the owner thereof and who does not sell them under the authority or with the consent of the owner, the buyer acquires no better title to the goods than the seller had, unless the owner of the goods is by his conduct precluded from denying the seller's authority to sell."
Nemo dat rule: buyer cannot get better title than seller had — subject to exceptions including estoppel and mercantile agent
