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Parole evidence rule meaning
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What does Parole evidence rule mean?
In practice, the parol (often spelled parole) evidence rule limits reliance on extrinsic evidence—such as prior negotiations, drafts or oral statements—to add to, vary or contradict the terms of a final written contract. It is a common law rule developed in case law, not legislation, and is applied with broadly consistent effect across England and Wales, Scotland, Northern Ireland and Ireland.
Where a document is intended as the entire agreement, the court generally treats it as the complete record. The rule is rebuttable. It does not exclude extrinsic material used to: seek rectification; prove vitiating factors (misrepresentation, mistake, fraud, duress, illegality, lack of capacity); establish a collateral contract or a condition precedent; identify parties or subject matter, or explain trade/customary meanings; imply terms; or show that a document was not intended to be binding (for example, subject to contract). Courts considers the background factual matrix to interpret wording, but typically not the parties’ subjective intentions or most prior negotiations.
Entire agreement clauses reinforce the rule but, without clear wording, do not exclude liability for misrepresentation. The rule’s practical significance is to promote contractual certainty while preserving remedies where the written record is inaccurate or invalid.
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NEWS
Dispute Resolution update: CPR PD 184; SLAPP strike-outs in force; OCMC mandatory; sanctions for AI misuse; key judgments on jurisdiction, injunctions, disclosure and declaratory relief—19 June 2025
In this issue: Key DR developments Claims and remedies Cross-border disputes Injunctions Litigation Case management Evidence and disclosure Dates for your diary Useful information Daily and weekly news alerts Key DR developments Minutes OPRC minutes of 12 May 2025: The record of the Online Procedure Rule Committee meeting held on 12 May 2025—run in a hybrid format at The Rolls Building (Royal Courts of Justice) and via video conference—addresses matters such as statutory instruments, plans for consultation, updates from sub-committees on possession and property, the pre-action model, the inclusion framework, and how forthcoming workstreams will be aligned. Further coordination of upcoming workstreams was recorded as a priority. For more, see News Analysis: Minutes of the OPR Committee meeting—12 May 2025. CPRC minutes of 9 May 2025: The note of the Civil Procedure Rule Committee meeting of 9 May 2025—again hybrid at The Rolls Building (Royal Courts of Justice) and via video conference—ranges...
19 June
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PRACTICE NOTES
2020 appellate civil litigation round-up: Court of Appeal, UK Supreme Court and CJEU decisions and forthcoming appeals
ARCHIVED : One persistent challenge for dispute resolution practitioners is staying current with case law developments that influence their speciality, or that bear on civil litigation procedure more broadly. This Practice Note distils the principal appeal authorities—namely rulings of the Court of Appeal and the Supreme Court and, where pertinent, selected judgments of the Court of Justice of the European Union (CJEU)—that we have covered, giving users straightforward access to those rulings; see: Key civil litigation appeals in review—2020. You can navigate this material via the table of contents in the left margin, or search this tracker with [CTRL]+[F]. The Practice Note also flags a number of anticipated appeals, where identified, to support horizon scanning. It is not designed to be a comprehensive catalogue of every appeal and/or significant decision of interest to dispute resolution practitioners. Note: regarding anonymity for natural persons when a request for a preliminary ruling is submitted to the CJEU, guidance issued by the CJEU provides: ‘To ensure the protection of the data of natural...
21 May
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