13D Filing: Mangrove Partners Master Fund, Ltd. and RPX Corp (RPXC)

1.

NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Mangrove Capital

2.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)    [X]

(b)    [ ]

3.

SEC USE ONLY

4.

SOURCE OF FUNDS

AF

5.

CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)      [ ]

6.

CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7.

SOLE VOTING POWER

0

8.

SHARED VOTING POWER

2,259,228

9.

SOLE DISPOSITIVE POWER

0

10.

SHARED DISPOSITIVE POWER

2,259,228

11.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

2,259,228

12.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)
EXCLUDES CERTAIN SHARES    [ ]

13.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

4.6%

14.

TYPE OF REPORTING PERSON

OO