In the Security Land and Exploration Company v. Weckey case of 1903, the U.S Supreme Court ruled in favor of Weckey. The dispute arose over a land title in California where both parties claimed ownership rights. The Security Land and Exploration Company argued that they had acquired the property through purchase from an individual who held a patent issued by the United States government, while Weckey claimed his right to ownership based on Mexican law prior to California becoming part of America. The court found that under Mexican law at that time, possession was considered sufficient evidence for claiming ownership rights if no other party contested it within five years - which was indeed what happened with this particular piece of land before it came into American jurisdiction following the Treaty of Guadalupe Hidalgo in 1848. Therefore, despite having a later-issued US patent for this property, Security Land's claim was invalidated because their predecessor did not contest Weckey's possession during those crucial five years when Mexican law still applied.

The dissenting opinion in the case of Security Land and Exploration Company v. Weckey argued that the majority's decision was incorrect because it failed to properly consider the nature of mining claims under federal law. The dissent believed that a mining claim is not simply a piece of real estate, but rather an interest in land granted by Congress with specific conditions attached. These conditions include requirements for annual labor and improvements on the claim, which are intended to encourage active development and prevent speculation or monopolization of mineral resources. If these conditions are not met, then according to federal law, all rights revert back to the United States government - including any buildings or other improvements made on the property. Therefore, even if Security Land had purchased Weckey's cabin before he defaulted on his obligations as a claimant (which was disputed), they would still have no right to keep it after his default because it became part of public lands again at that point.