In the law firms Jenner & Block LLP added private equity lawyer Jason Douglas Osborn as a corporate partner. He joins from Kirkland & Ellis LLP where he handled matters on behalf of Harren Equity Partners, Hudson Ferry Capital, Liberty Partners, GTCR LLC and others. •John T. Gabrielides and Joshua S. Frick, both Brinks, Gilson & Lione trademark attorneys, and Erin Wright Lothson, intellectual property corporate counsel at Groupon Inc., were featured speakers at the Association of Corporate Counsel …