Company:  OPNET TECHNOLOGIES INC
Form Type:  10-Q
Filing Date:  2/8/2012 
CIK:  0001108924 
Address:  7255 WOODMONT AVENUE 
City, State, Zip:  BETHESDSA, Maryland 20814 
Telephone:  (240) 497-3000 
Fiscal Year:  03/31 
Description of Business
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  FORM 10-Q
    PART I. FINANCIAL INFORMATION
      ITEM 1. Condensed Consolidated Financial Statements
        BALANCE SHEET
        INCOME STATEMENT
        CASH FLOW
        NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
      ITEM 2. Management's Discussion and Analysis of Financial ...
        BENEFICIAL OWNERS
      ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT ...
      ITEM 4. CONTROLS AND PROCEDURES
    PART II. OTHER INFORMATION
      ITEM 1. Legal Proceedings
      ITEM 1A. Risk Factors
      ITEM 2. Unregistered Sales of Securities and Use of Proceeds
      ITEM 3. Defaults Upon Senior Securities
      ITEM 5. Other Information
      ITEM 6. Exhibits
    SIGNATURE
    EXHIBIT INDEX
  EXHIBIT 31.1
  EXHIBIT 31.2
  EXHIBIT 32.1
  EXHIBIT 32.2