Brennan, Manna & Diamond is a Columbus law firm that serves companies. The firm works in a broad spectrum, from startups to dispute resolution, from mergers and acquisitions to sophisticated transactions. Areas of practice include appellate practice group, bankruptcy, business and corporate law, immigration, construction law, government, creditors rights, e-discovery, finance, education, intellectual property, mergers, and the oil industry. The firm has represented clients in Asia and Latin America. Brennan, Manna & Diamond is affordable for small firms but experienced enough to work with major corporations.