San Francisco -- Business media giant Thomson Reuters said on Thursday it will acquire San Francisco-based MarkMonitor, a provider of online corporate brand protection services. Financial terms of the deal were not disclosed. Thomson Reuters said the acquisition will strengthen its portfolio of intellectual property tools. MarkMonitor will become part of the company's Intellectual Property & Science business. The company's more than 400 employees, including CEO Irfan Salim, are expected to join Thomson Reuters. "With the addition of online brand protection solutions like those provided by MarkMonitor, we'll be able to deliver advanced technologies to keep customers one step ahead of brandjackers and reduce the enormous risk posed to brands online," said David Brown, the president of intellectual property solutions at Thomson Reuters.