Steptoe & Johnson LLP U.S. Patent Activity on Martindale.com

Martindale-Hubbell has augmented a firm's provided information with third-party sourced data to present a more comprehensive overview of the firm's expertise.

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Primary U.S Patent Classification by Grant Date

Source: U.S. Patent Trade Office. Powered by LexisNexis atVantage

354 Patents were granted between

October 01, 2007 and September 30, 2009

and are listed below by classification

and percentage

257

Active solid-state devices (e.g., transistors, solid-state diodes)

(4.8 %)

Metal working

(2.8 %)

327

Miscellaneous active electrical nonlinear devices, circuits, and systems

(2.8 %)

Power plants

(2.8 %)

324

Electricity: measuring and testing

(2.3 %)

428

Stock material or miscellaneous articles

(2.3 %)

D21

Games, toys, and sports goods

(2.0 %)

313

Electric lamp and discharge devices

(1.7 %)

359

Optical: systems and elements

(1.7 %)

363

Electric power conversion systems

(1.7 %)

All others

266

(75.1 %)

Total Number of U.S.	354
Granted Patents:

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U.S. Patent Activity: Steptoe & Johnson LLP

About This Firm

Primary U.S Patent Classification by Grant Date

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