Oblon, McClelland, Maier & Neustadt, L.L.P. (often abbreviated to Oblon) is an intellectual property law firm in Alexandria, Virginia. Founded in 1968, Oblon is one of the largest law firms in the United States focusing exclusively on intellectual property law. The law firm performs trademark and patent prosecution, as well as litigation and Post-Grant Proceedings before the Patent Trial and Appeal Board (PTAB). The firm has been ranked first among law firms based on the number of utility patent applications filed per annum for 25 years running, 
Attorneys at Oblon include Arthur Neustadt, who argued successfully before the Supreme Court of the United States on behalf of respondent Shoketsu Kinzoku K.K. in the case of Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co., as well as Charles "Chico" Gholz, in the field of patent interference practice.
The firm's Post-Grant Patent practice group publishes the Patents Post Grant blog. including the commentary of partners Stephen G. Kunin and Scott McKeown. Additionally, the firm publishes two other blogs on IP related topics including one on Design Patents (protectingdesigns.com) and US ITC Section 337 practice (ITCblog.com).