Exhibit 12.2
 Brandywine Operating Partnership, L.P.
Computation of Ratio of Earnings to Combined Fixed Charges
(in thousands)
 For the nine-months ended September 30,
    
    
    For the years ended December 31,2008
    
    
    2007
    
    
    2007
    
    
    2006
    
    
    2005
    
    
    2004
    
    
    2003Earnings before fixed charges:Add:Income (loss) from continuing operations
    
    $
    3,802
    
    
    $
    (13,901
    )
    
    $
    19,019
    
    
    $
    (30,274
    )
    
    $
    24,449
    
    
    $
    46,762
    
    
    $
    49,173Minority interest  partners share of consolidated real estate ventures
    
    
    117
    
    
    
    103
    
    
    
    465
    
    
    
    (270
    )
    
    
    154
    
    
    
    (206
    )
    
    
    Fixed charges  per below
    
    
    130,839
    
    
    
    138,925
    
    
    
    185,572
    
    
    
    186,044
    
    
    
    86,191
    
    
    
    60,611
    
    
    
    62,407Less:Capitalized interest
    
    
    (13,956
    )
    
    
    (12,757
    )
    
    
    (17,476
    )
    
    
    (9,537
    )
    
    
    (9,603
    )
    
    
    (3,030
    )
    
    
    (1,503
    )Earnings before fixed charges
    
    $
    120,802
    
    
    $
    112,370
    
    
    $
    187,580
    
    
    $
    145,963
    
    
    $
    101,191
    
    
    $
    104,137
    
    
    $
    110,077Fixed charges:Interest expense (including amortization)
    
    $
    110,644
    
    
    $
    121,373
    
    
    $
    161,674
    
    
    $
    170,214
    
    
    $
    73,918
    
    
    $
    54,610
    
    
    $
    57,835Capitalized interest
    
    
    13,956
    
    
    
    12,757
    
    
    
    17,476
    
    
    
    9,537
    
    
    
    9,603
    
    
    
    3,030
    
    
    
    1,503Proportionate share of interest for unconsolidated real estate ventures
    
    
    6,239
    
    
    
    4,795
    
    
    
    6,422
    
    
    
    6,293
    
    
    
    2,670
    
    
    
    2,971
    
    
    
    3,069Total Fixed Charges
    
    
    130,839
    
    
    
    138,925
    
    
    
    185,572
    
    
    
    186,044
    
    
    
    86,191
    
    
    
    60,611
    
    
    
    62,407Ration of earnings to combined fixed charges
    
    
    (b
    )
    
    
    (b
    )
    
    
    1.01
    
    
    
    (b
    )
    
    
    1.17
    
    
    
    1.72
    
    
    
    1.76
 
 (a)
    
    Amounts for the nine-months ended September 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 September 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
$10,037 for the nine-months ended September 30, 2008, $26,555 for the nine-months ended September 20, 2007 and $40,081 for the year ended
December 31, 2006 to achieve a coverage ratio of 1:1.