Block Corporation is a financial services and digital payments company that develops a payments platform aimed at small and medium businesses that allows them to accept credit card payments and use tablet computers as payment registers for a point-of-sale system. The company also provides financial and marketing services. Block Corporation was formerly known as Square Inc, an American multinational technology conglomerate founded in 2009 by Jack Dorsey and Jim McKelvey. On December 1, 2021, Square announced that it would change its company name to Block, Inc. on December 10, 2021. The change was announced shortly after Dorsey resigned as CEO of Twitter. However, on December 16, less than a week into the rebrand, H&R Block sued the company for trademark infringement, claiming that the name seeks to confuse customers by misappropriating the Block brand name, which H&R owns. Block Corporation completed its acquisition of Afterpay on January 31, 2022.