The purpose of litigation privilege is to create a "zone of privacy" around documents that were made in "relation to pending or apprehended litigation".
This privilege applies to "communications of a non-confidential nature between the solicitor and third parties and even includes material of a non-communicative nature".
Litigation privilege protects documents that were should be created in the following circumstances:
- where the dominant purpose of the document is for existing, contemplated or anticipated litigation; and
- was created in answer to inquiries made by an agent for the party's solicitor; or
- was created at the request or suggestion of the party's solicitor; or
- was created for the purpose of giving them to counsel in order to obtain advice; or
- was created to enable counsel to prosecute or defence an action or prepare a brief.
Once a party decides to call expert evidence, the party shall be deemed to have waived the privilege in relation to the advice given to the party and the materials forming the foundation of that opinion.
Notes made to refresh memory and to facilitate consultation with counsel prior to retaining counsel are captured by litigation privilege.
Work Product Privilege
Work product privilege (often called "litigation privilege" or "lawyer's brief privilege") protects all work product that is "rooted in analysis, not investigation" which comprises the "fruits of the mind not the feet".
It arises when a lawyer prepares "opinions, theories, analyses of the case, research, internal notes, memoranda or correspondence in the course of employment".
- Blank v Canada (Minister of Justice), 2006 SCC 39 (CanLII),  2 SCR 319, at para 34
Blank v Canada (Minister of Justice), ibid., at p. 330 (SCR)
- Kennedy v McKenzie,  O.J. No 2060 (S.C.), 2005 CanLII 18295 (ON SC), per Ducharme J. at 20
- see R v Stone,  2 SCR 290, 1999 CanLII 688 (SCC), at para 99
R v Abeyewardene, 2008 CanLII 78103 (ON SC),  O.J. No. 5749 (S.C.J.)
- see R v Card 2002 ABQB 537 (CanLII) at para 12
Prescott, "Litigation Privilege: Scope, Rationale and Critique" CBA Paper 
R v Chan, 2002 ABQB 287 (CanLII), at para 95
R v Brown [Disclosure],  O.J. No. 6163 (Ont. Gen. Div.), per Trafford J.
Card, supra at para 14
Crown Work Product
The Crown work product consists of written notes and materials "involves thought processes or considerations of Crown counsel in the preparation of its case".
It will include:
- Crown counsel's notes on a file;
- Crown counsel's memoranda on a file;
- Crown counsel's opinion; and
- Trial strategy.
Crown counsel opinion will include legal opinion as well as opinion of the case strength and witness credibility.
It does not include "factual information" such as new facts or material inconsistencies.
Crown work product privilege is not a subset of solicitor-client privilege.
Assuming the subject of the claim of privilege is relevant, the presumption is that the documents are not privileged.
Work product during the investigative stage will usually not be privileged. At the prosecution stage, however, there is a greater likelihood that it will be privileged.
Simply transferring note-taking duties from the police to the Crown does not automatically protect the notes under Crown Work Produce Privilege.
R v Chan, 2002 ABQB 287 (CanLII) at para 95
- Chan, ibid. at para 96
Chan, ibid. at para 96
Chan, ibid. at para 97
R v O'Connor, 1995 CanLII 51 (SCC), 103 CCC (3d) 1 at p. 45, L'Heureux-Dubé J.
Chan, supra at para 65
R v Card, 2002 ABQB 537 (CanLII) at para, supra at para 20
R v Pickton, 2005 BCSC 1258 (CanLII), at para 14
see R v Trang, 2002 ABQB 390 (CanLII) at paras 10 to 12
R v Burlacoff, 2009 CanLII 18881 (ON SC) at para 17
R v Malik, 2003 BCSC 1709 (CanLII),  BCJ No. 2973 (BCSC) at para 10
Waiver of Litigation Privilege
However, by using notes to refresh memory prior to testifying may result in a waiver of privilege.
As a general rule, a witness who refreshes their memory from any document, the opposing counsel is entitled to review it.
R v Sachkiw, 2014 ONCJ 287 (CanLII) - privilege in notes taken on advice of father, but judge found the privilege was later waived.
see also Refreshing Memory
Attorney-General for Ontario et al. C.E.C. Edwards Construction et al., 60 O.R. (2d) 618 (S.C.O.)
R v Dunn, 2012 ONSC 2748 (CanLII),  O.J. No. 1988 (S.C.J.)
R v Fast, 2009 BCSC 1671 (CanLII),  BCJ No. 2421 (B.C.S.C.)
R v Mugford, 1990 CanLII 6504 (NL CA),  N.J. No. 210 (NLCA)
R v Monfils and four others, 1971 CanLII 470 (ON CA),  O.J. No. 1725 (C.A.)
R v Lewis,  BCJ No. 105 (BCSC)(*no link)
Common-interest privilege is not a privilege that stands-alone. It arises from solicitor-client privilege or litigation privilege.
The privilege attaches to information that is shared among several individuals with a common interest who are anticipating litigation.