Barnes & Thornburg LLP is a large U.S.

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 law firm

Law firm

A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients about their legal rights and responsibilities, and to represent clients in civil or criminal cases, business transactions, and other...

 and lobbying

Lobbying

Lobbying is the act of attempting to influence decisions made by officials in the government, most often legislators or members of regulatory agencies. Lobbying is done by various people or groups, from private-sector individuals or corporations, fellow legislators or government officials, or...

 group. It is currently the largest law firm in the state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Indiana

Indiana

Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

, and 97th largest in the United States. Their main headquarters is at the Barnes and Thornburg Building

Barnes and Thornburg Building

The Barnes and Thornburg Building is a high rise in Indianapolis, Indiana. Designed by architect Daniel Burnham, it was completed in 1909 and has 17 floors. It is primarily used for office space and was added to National Register of Historic Places in 1982. Its owner and primary occupant is the...

 in Indianapolis, Indiana

Indianapolis, Indiana

Indianapolis is the capital of the U.S. state of Indiana, and the county seat of Marion County, Indiana. As of the 2010 United States Census, the city's population is 839,489. It is by far Indiana's largest city and, as of the 2010 U.S...

.
The firm was founded in 1982 as a merger of two large Indiana-based firms: the Indianapolis-based Barnes, Hickam, Pantzer & Boyd (founded in 1940) and the South Bend

South Bend, Indiana

The city of South Bend is the county seat of St. Joseph County, Indiana, United States, on the St. Joseph River near its southernmost bend, from which it derives its name. As of the 2010 Census, the city had a total of 101,168 residents; its Metropolitan Statistical Area had a population of 316,663...

-based Thornburg, McGill, Deahl, Harman, Carey & Murray (founded in 1926).