May a lawyer use an opposing company’s potentially privileged email that was inadvertently produced in discovery?

Short answer If the lawyer knows or reasonably should know production was inadvertent, the opinion requires prompt notice to the sender and a reasonable opportunity to seek court relief before use. If no relief is sought or obtained, or the lawyer has no reason to know of inadvertence, it permits use.
Bar
MOLEC
Issued
2007

Apply this to your situation

This page answers the general question as of 2007. Ask about yours and see what the current Missouri Rules of Professional Conduct say for your facts, with citations.

Currency note: this opinion is from 2007
Subsequent statutory amendments, court decisions, or later opinions or rule amendments may have changed the analysis. Treat this page as historical context, not current legal advice. Verify current law before relying on any specific rule, deadline, or remedy mentioned here.
How much weight this carries: Under Missouri Supreme Court Rule 5.30, formal opinions are binding; informal opinions are advisory. Source.
About this page: The plain-English summary, reader guidance, and Q&A below were written by Ezel based on the official ethics opinion. The original opinion (linked on this page) is the authoritative source for any reliance.

Plain-English summary

The lawyer received an email in discovery containing a company lawyer’s advice to another member of the companies involved in the case. The lawyer asked whether it could be used as evidence.

Under the version of Rule 4-4.4(b) addressed, if the lawyer knows or reasonably should know the email was produced inadvertently, the lawyer must promptly notify the sender and allow reasonable time to seek court relief before use. If the sender does not seek or obtain relief, the opinion permits use. It also permits use if the lawyer has no reason to know of inadvertent production.

In practice

The opinion ties the notice and waiting steps to the lawyer’s actual or reasonably expected knowledge of inadvertent production. It permits use after the sender fails to seek or obtain relief.

Common questions

Q: When must the receiving lawyer notify the sender?

A: Promptly when the lawyer knows or reasonably should know the email was provided inadvertently.

Q: Must the lawyer wait before using the email?

A: The opinion requires a reasonable period for the sender to seek court relief after notice.

Q: When does the opinion permit use?

A: It permits use if relief is not sought or obtained, or if the lawyer has no reason to know the email was provided inadvertently.

Background and rules framework

The opinion applies the then-new Rule 4-4.4(b) to a potentially privileged email produced in discovery.

Citations and references

Missouri Rules of Professional Conduct:

  • Rule 4-4.4

See also

Source

Original opinion text

Reproduced from the official source for research purposes. The linked source is authoritative.

QUESTION: Attorney represents a minority member of companies. Attorney contends an email produced by the Defendant to Attorney is not subject to attorney-client privilege because, as a member, the client is entitled to see all business records and communications of those companies. The email contains an inquiry from another member to a company attorney and the company attorney’s advice. Attorney questions whether Attorney may ethically use the email as evidence in the case.

ANSWER: If Attorney “knows or reasonably should know” that the email was provided inadvertently, Attorney has an obligation under the new version of Rule 4–4.4(b), to promptly notify the sender that Attorney has the email. Attorney’s notice should provide the sender with a reasonable period of time to seek relief from the court before Attorney uses the email. If the sender does not seek or obtain relief from the court, Attorney may ethically use the email. If Attorney has no reason to know that the email was provided inadvertently, Attorney may ethically use it.

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