Isaac M. Fisher appealed a case to the US Supreme Court against John Haldeman, Jacob S. Haldeman, Richard J. Haldeman and Robert J. Ross (executors of Jacob Haldeman) and Thomas Chambers (administrator de bonis non of Thomas Duncan). The dispute was over whether or not Isaac had an equitable right to certain real estate in Pennsylvania that he claimed belonged to him as part of his father's will from 1817 which gave him title to it upon reaching 21 years old in 1824. The executors argued that since Isaac did not take possession until after the death of his father, they were entitled to the property instead due to their own claim on it through inheritance laws at the time; however, Isaac contended that this should be disregarded because he had already established a legal right prior with his father's will before any other claims could be made by anyone else on it afterwards. Ultimately, the court found in favor for Isaac based on evidence presented showing clear proof that he held rightful ownership according to what was stated within his late father’s will and thus granted him full title rights over said real estate accordingly without further contestation from either party involved thereafter going forward

In the case of Isaac M. Fisher v. John Haldeman, Jacob S. Haldeman, Richard J. Haldeman, Robert J. Ross and Thomas Chambers, the dissenting opinion argued that a contract between two parties should be enforced even if it is not in writing as long as there is sufficient evidence to prove its existence and terms of agreement between both parties involved in the transaction. The dissent further noted that when an oral contract has been proven by witnesses or other forms of evidence then it should be considered valid under law regardless of whether or not it was written down at any point during negotiations or after they were completed since verbal agreements are just as binding on those who make them as written ones would be if they had been made instead; thus making such contracts enforceable by courts despite their lack of formality due to being spoken rather than documented on paper with signatures from all participants present for signing off upon completion thereof