http://www.chambersandpartners.com/USA/
Intellectual Property: Trade Mark & Copyright: New York
* Band 1
Debevoise & Plimpton LLP
Fross Zelnick Lehrman & Zissu PC
* Band 2
Cowan, Liebowitz & Latman
Kirkland & Ellis LLP
Patterson Belknap Webb & Tyler LLP
* Band 3
Cravath, Swaine & Moore LLP
davis wright tremaine llp
Dorsey & Whitney LLP
Kilpatrick Stockton LLP
Paul, Hastings, Janofsky & Walker LLP
Paul, Weiss, Rifkind, Wharton & Garrison LLP
White & Case LLP
* Band 4
Arnold & Porter LLP
Baker & McKenzie LLP
Fulbright & Jaworski LLP
Lathrop & Gage LLP
Intellectual Property: California [the list isnt divided between soft & hard IP, so you'll have to check their websites to see how many partners they have in each to see where their specialties lie]
* Band 1
Irell & Manella LLP
Morrison & Foerster LLP
Weil, Gotshal & Manges LLP
* Band 2
Fish & Richardson PC
Howrey LLP
Keker & Van Nest LLP
Kirkland & Ellis LLP
Orrick, Herrington & Sutcliffe LLP
Quinn Emanuel Urquhart & Sullivan, LLP
* Band 3
cooley llp
Covington & Burling LLP
dla piper LLP (US)
Fenwick & West LLP
Gibson, Dunn & Crutcher LLP
Jones Day
Knobbe Martens Olson & Bear
Latham & Watkins LLP
McDermott Will & Emery LLP
Paul, Hastings, Janofsky & Walker LLP
Ropes & Gray LLP
Wilson Sonsini Goodrich & Rosati
* Band 4
Arnold & Porter LLP
Bingham McCutchen LLP
durie tangri LLP
Finnegan, Henderson, Farabow, Garrett & Dunner LLP
O'Melveny & Myers LLP
sidley austin llp
Skadden, Arps, Slate, Meagher & Flom LLP & Affiliates
townsend and townsend and Crew LLP
White & Case LLP
WilmerHale
And i have no idea about Minneapolis sorry