If you need a large, full-service law firm, you can't do much better than Thompson & Knight LLP.
Look up court records in Dallas County, Denton County, Collin County, and Harris County.
Here is the Texas Secretary of State.
Here are some helpful copyright-related materials from the United States Copyright Office.
These are the antitrust-related web pages for the Federal Trade Commission and the Department of Justice.
"Billable Hour" Under Attack, Wall Street Journal, August 24, 2009, at A1