Conrad's Lots is a United States Supreme Court case that dealt with the issue of whether a deed of land was valid. The case involved a dispute between two parties, Conrad and the heirs of a man named John. Conrad had purchased a tract of land from John, but the deed was not properly recorded. The heirs of John argued that the deed was invalid because it had not been properly recorded. The Supreme Court held that the deed was valid and enforceable. The Court reasoned that the deed was valid because it had been delivered to Conrad and accepted by him. The Court also noted that the deed had been acknowledged by John and his wife, and that the deed had been recorded in the county where the land was located. The Court concluded that the deed was valid and enforceable, and that the heirs of John could not challenge its validity.

In Conrad's Lots, the Supreme Court was tasked with determining whether a deed of land in Wisconsin had been validly executed. The majority opinion held that the deed was invalid because it did not comply with certain formalities required by state law. However, Justice Field dissented from this decision and argued that the deed should be upheld as valid despite its failure to meet all of these requirements. He reasoned that since there were no disputes between parties regarding ownership of the land or any other issues related to it, and since both parties had acted upon their understanding of what they believed to be a legally binding agreement, then equity demanded that such an agreement should be enforced regardless of technical defects in its execution. Furthermore, he noted that if courts refused to recognize agreements made without strict compliance with legal formalities then many innocent people would suffer harm due to their lack of knowledge about such laws.