Exhibit 12.2
 Brandywine Operating Partnership, L.P.
Computation of Ratio of Earnings to Combined Fixed Charges
(in thousands)
 For the six-months ended June 30,
    
    
    For the years ended December 31,2008
    
    
    2007
    
    
    2007
    
    
    2006
    
    
    2005
    
    
    2004
    
    
    2003Earnings before fixed charges:Add:Income (loss) from continuing operations
    
    $
    6,860
    
    
    $
    (12,228
    )
    
    $
    21,102
    
    
    $
    (28,215
    )
    
    $
    25,919
    
    
    $
    48,265
    
    
    $
    50,842Minority interest  partners share of
consolidated real estate ventures
    
    
    78
    
    
    
    108
    
    
    
    465
    
    
    
    (270
    )
    
    
    154
    
    
    
    (206
    )
    
    
    Fixed charges  per below
    
    
    87,824
    
    
    
    92,165
    
    
    
    185,572
    
    
    
    186,044
    
    
    
    86,191
    
    
    
    60,611
    
    
    
    62,407Less:Capitalized interest
    
    
    (9,265
    )
    
    
    (8,217
    )
    
    
    (17,476
    )
    
    
    (9,537
    )
    
    
    (9,603
    )
    
    
    (3,030
    )
    
    
    (1,503
    )Earnings before fixed charges
    
    $
    85,497
    
    
    $
    71,828
    
    
    $
    189,663
    
    
    $
    148,022
    
    
    $
    102,661
    
    
    $
    105,640
    
    
    $
    111,746Fixed charges:Interest expense (including amortization)
    
    $
    74,513
    
    
    $
    80,719
    
    
    $
    161,674
    
    
    $
    170,214
    
    
    $
    73,918
    
    
    $
    54,610
    
    
    $
    57,835Capitalized interest
    
    
    9,265
    
    
    
    8,217
    
    
    
    17,476
    
    
    
    9,537
    
    
    
    9,603
    
    
    
    3,030
    
    
    
    1,503Proportionate share of interest for unconsolidated real estate ventures
    
    
    4,046
    
    
    
    3,229
    
    
    
    6,422
    
    
    
    6,293
    
    
    
    2,670
    
    
    
    2,971
    
    
    
    3,069Total Fixed Charges
    
    
    87,824
    
    
    
    92,165
    
    
    
    185,572
    
    
    
    186,044
    
    
    
    86,191
    
    
    
    60,611
    
    
    
    62,407Ratio of earnings to combined fixed charges
    
    
    (b
    )
    
    
    (b
    )
    
    
    1.02
    
    
    
    (b
    )
    
    
    1.19
    
    
    
    1.74
    
    
    
    1.79
 
 (a)
    
    Amounts for the six-months ended June 30, 2008 and 2007 and for the years ended December 31,
2007, 2006,
2005, 2004 and 2003 have been reclassified to present properties sold consistent with the
presentation for the period
ended June 30, 2008. As a result, operations have been reclassified to discontinued operations
from
continuing operations for all periods presented.(b)
    
    Due to the registrants loss in the period, the coverage ratio was less than 1:1. The
registrant must generate additional earnings of $2,327 for the six-months ended June 30, 2008,
$20,337 for the six-months ended June 20, 2007 and $38,022 for the year ended
December 31, 2006 to achieve a coverage ratio of 1:1.