Blackberry 2013 Annual Report Download - page 233

Exhibit 31.1
Certification
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
I, Thorsten Heins, certify that:
1. I have reviewed this annual re
p
ort on Form 40-F of Research In Motion Limited;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the circumstances under which such statements were made, not
misleadin
g
with res
p
ect to the
p
eriod covered b
y
this re
p
ort;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in
all material respects the financial condition, results of operations and cash flows of the issuer as of, and for, the periods
p
resented in this re
p
ort;
4. The issuer’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as
defined in Exchan
g
e Act Rules 13a-15(f) and 15d-15(f)) for the issuer and have:
a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the issuer, including its
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in
which this re
p
ort is bein
g
p
re
p
ared;
b. Designed such internal control over financial reporting, or caused such internal control over financial reporting
to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial
reporting and the preparation of financial statements for external purposes in accordance with generally
acce
p
ted accountin
g
p
rinci
p
les;
c. Evaluated the effectiveness of the issuer’s disclosure controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period
covered b
y
this re
p
ort based on such evaluation; and
d. Disclosed in this report any change in the issuer’s internal control over financial reporting that occurred during
the period covered by the annual report that has materially affected, or is reasonably likely to materially affect,
the issuer’s internal control over financial re
p
ortin
g
; and
5. The issuer’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over
financial reporting, to the issuer’s auditors and the audit committee of the issuer’s board of directors (or persons
p
erformin
g
the e
q
uivalent function):
a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the issuer’s ability to record, process, summarize and
re
p
ort financial information; and
b. Any fraud, whether or not material, that involves management or other employees who have a significant role
in the issuer’s internal control over financial re
p
ortin
g
.
Date: March 28, 2013
/
s/ Thorsten Heins
Name: Thorsten Heins
Title: Chief Executive Officer