Exemption 4


 * This article is part of a series on Exemptions

Introduction
Exemption 4 is usually used by agencies to withhold trade secrets and confidential business information submitted to the government by private individuals and companies.

Under the exemption, an agency may withhold “trade secrets and commercial or financial information obtained from a person and privileged or confidential.” The exemption applies to two types of records. The first category of records that falls under Exemption 4 is trade secrets. The second category consists of information that is a) commercial or financial, and b) obtained from a person, and c) privileged or confidential.

In 2019, the Supreme Court expanded the type of information that falls within the second category of Exemption 4 in Food Marketing Institute v. Argus Leader, holding that no showing of competitive harm was required for information to be considered "confidential".

Text of Exemption 4
(b) This section does not apply to matters that are— [...]
 * (4) trade secrets and commercial or financial information obtained from a person and privileged or confidential;

Scope of Exemption for Trade Secrets
While the term “trade secret” is not defined in the text of the FOIA, courts have adopted one of two definitions.

Prior to a 1983 ruling by the U.S. Court of Appeals for the D.C. Circuit, the definition courts generally relied on was what is commonly referred to as the “Restatement” test, so called after the legal treatise from which it was derived. According to this definition, a trade secret is: “any formula, pattern, device or compilation of information which is used in one’s business, and which gives him an opportunity to obtain an advantage over competitors who do not know or use it.” Under this definition, “a trade secret can be any information used in a business which gives competitive advantage.”

A narrower definition was adopted later by the U.S. Court of Appeals for the D.C. Circuit in Public Citizen Health Research Group v. Food & Drug Administration, which has also been adopted by the U.S. Court of Appeals for the Tenth Circuit and some lower courts in other circuits. In these courts, a trade secret is defined as “a secret, commercially valuable plan, formula, process, or device that is used for the making, preparing, compounding, or processing of trade commodities and that can be said to be the end product of either innovation or substantial effort.”

The “Public Citizen” definition applies only to information related to “the productive process itself,” rather than “collateral matters of business confidentiality such as pricing and sales volume data, sources of supply and customer lists.” That is, there must be “a direct relationship between the information at issue and the productive process.”

The distinctions between these definitions are important to understand because their applications have sometimes resulted in different outcomes. For example, in Public Citizen, the court overturned the lower court's application of the Restatement definition in finding that health and safety data from clinical studies constituted trade secrets. Instead, applying the narrower definition of “trade secret,” the court held that since “the relationship of the requested information to the productive process [was] tangential at best,” and the information was not a “plan, formula, process, or device,” it was not a trade secret under Exemption 4.

Strategies for Challenging Withheld Records as Trade Secrets
Regardless of which definition of “trade secret” is applied, both definitions have three elements in common. First, the submitter must use the information in business or trade, rather than for a non-commercial purpose. Second, the information must have commercial value. Finally, the information must have been maintained as a secret.

First, a requester can challenge whether the submitter used the information in business, and identify situations in which the submitter is not “engaged in trade or commerce” related to the information. For example, a court held that research designs for noncommercial scientists — such as university researchers — do not meet this criterion, as the scientists are not “involved in trade or commerce.” Non-commercial research, especially that conducted by non-profit outlets or philanthropic arms of for-profit entities, is more likely to be found “non-commercial.”

Second, a requester can argue that the information is not “commercially valuable” on the basis that it does not give the submitter a “competitive advantage. . . over competitors.” For example, a court rejected a company’s claim that certification materials it submitted to the federal government for an airplane were “commercially valuable” in the market for antique aircrafts, as it had not been shown that the company currently competed in that particular market or intended to do so.

Third, in disputing whether the alleged information is actually a “secret,” a requester can cite examples of its “actual public disclosure,” as such disclosure “eliminates the trade secret status of such information.” For example, as one court noted, if the submitter of documents gives the government permission to loan or distribute them to members of the public, “those documents are no longer ‘secret’ for purposes of Exemption 4.” In one case, where a company authorized the government to “loan” information it submitted about its antique airplane model to third parties seeking to make repairs or replacement parts, court held that that information “ceased to be ‘secret.’”

Scope of Exemption for Commercial or Financial Information
In addition to trade secrets, Exemption 4 also applies to an independent category of records.

An agency may withhold information that is: “(1) commercial or financial; (2) obtained from a person, and (3) privileged or confidential.”

Commercial or Financial
While the terms commercial or financial should be “given their ordinary meanings,” the term “commercial” has been construed broadly to apply to both information that is “of a commercial nature” or “serves a commercial function.” The D.C. Circuit has emphasized that it is the "nature of the information itself" that is crucial, rather than "potential commercial consequences of disclosure."

For example, information about revenue, service pricing, checking accounts, leases, and oil quantities and reserves have been held to satisfy this definition. In contrast, a court did not find registration numbers posted on aircraft tails to be “commercial,” as they could only be used to identify aircraft descriptions, the owner’s names, and historical location information, and not the business purpose of a particular flight. While the party opposing release speculated that historical location information could be used to gain “insight into the nature of a company’s business dealings,” the court held this did “not convert the aircraft registration numbers themselves into commercial information.”

While the non-profit status of the submitter is one relevant consideration, that fact alone will likely not be enough to overcome a claim that the information is “commercial” or “financial”. As one court has explained, “information may qualify as ‘commercial’ even if the provider’s. . . interest in gathering, processing, and reporting the information is noncommercial.” For example, a court rejected an agency’s claim that owl-sighting information gathered and provided by a state agency was commercial where, in exchange for access to it, the federal agency gave the state agency funds to maintain its data collection system. The court found this information was not commercial, even though it was exchanged pursuant to a cooperative agreement, because the state agency was forbidden by law from selling it — indicating that the state did not have a commercial interest in its disclosure — and the government created the information, “rather than. . . a commercial enterprise.”

In another case, the U.S. Court of Appeals for the D.C. Circuit held that “a noncommercial scientist’s research design” was not “a trade secret or item of commercial information,” as the scientist was not “engaged in trade or commerce.” The nature of the scientist’s interest in nondisclosure was also not commercial, the court explained, as “[t]o the extent that his interest is founded on professional recognition and reward, it is surely more the interest of an employee than of an enterprise.” There, the court said, the government had failed to “introduce a single fact relating to the commercial character of any specific research project.”

The “character of the information” itself is also important to consider. In one case, where a non-profit organization — - a consortium of utility companies — submitted nuclear power facility safety reports to the government, the court held that the information was still “commercial.” The court reasoned that the organization’s member utility companies were “commercial enterprises engaged in the production and sale of electrical power for profit,” and releasing information about the operations of their nuclear power plants could “materially affect” their “commercial fortunes.”

Obtained from a Person
The exemption only applies to “data which have not been generated within the [federal] Government” because the Administrative Procedure Act defines “person” as “an individual, partnership, corporation, association, or public or private organization other than an agency.”

It should be noted that “[t]he fact that information about an individual” — or entity — “can sometimes be inferred from information generated within an agency does not mean that such information was obtained from that person within the meaning of FOIA.” Based on that distinction, a court held that information about loans the Federal Reserve made to private banks was not “obtained from” the borrowing banks. Even though disclosing the terms of the loan could allow one to draw “inferences” about the borrower — such as “that the bank that got the loan asked for it, that it got no more than it requested, and that the other terms were acceptable to the borrower” — the Federal Reserve Banks themselves generated the information upon deciding to grant the loans, and, until that point, the information did not exist.

Some courts have held that data “collected and slightly reprocessed by the government,” is “obtained from a person.” For example, a court upheld the deletion of information relating to cost and rate data for a government contractor — such as “actual cost for units produced” — from an agency audit report, as it was “information supplied by [the company] or from which information supplied [by the company] could be extrapolated.” In contrast, where an agency audit report on a hospital’s Medicare billing practices was “not simply a summary or reformulation of information supplied by” the hospital, but also involved analysis by the agency, a court held that the audit was not “obtained from” the hospital.

Privileged or Confidential
In addition to the requirements that the information be “commercial or financial” and “obtained from a person,” the government must also demonstrate that the information is either privileged or confidential.

Privileged
“Privileged” information under Exemption 4 generally refers to information that is privileged from civil court discovery, meaning it can be shielded from disclosure.

It is questionable — as is the case with Exemption 5 — whether Exemption 4 incorporates “every privilege known to civil discovery,” and privileges should be incorporated “only after careful consideration of the language and legislative history of Exemption 4, its relationship to other exemptions, and the general disclosure mandate of FOIA.”

The U.S. Court of Appeals for the Fifth Circuit has specified that the term “refers only to privileges created by the Constitution, statute, or the common law.” The court cited as examples the Fifth Amendment to the U.S. Constitution, a Texas statute providing for a clergyman-penitent privilege, and two that had been recognized by federal courts — the attorney-client and marital privileges. On that basis, the court rejected a proposed lender-borrower privilege — which was mentioned in FOIA’s legislative history — as the statutory language that would have supported that privilege ultimately was not adopted in the FOIA, and the U.S. Supreme Court has emphasized that the FOIA itself “creates no privileges.”

From the limited case law interpreting the “privileged” nature of information under Exemption 4, one privilege that some courts recognized under this exemption is the attorney-client privilege, which protects an attorney’s confidential communications to his/her client based on confidential information supplied by the client.

Confidential
The meaning of "confidential" under Exemption 4 was significantly altered in a 2019 case from the Supreme Court. In Food Marketing Institute v. Argus Leader Media, the Supreme Court held that "where commercial or financial information is both customarily and actually treated as private by its owner and provided to the government under   an assurance of privacy, the information is 'confidential' within the meaning of Exemption 4.” Prior to this case, courts had uniformly required evidence that release of information would result in some kind of competitive harm to the information's source for it to be considered "confidential", frequently referred to as the National Parks standard.

The request at issue in Argus Leader sought data on how much individual retail stores received in SNAP benefits (commonly known as food stamps) from the United States Department of Agriculture. The USDA noted the name and address of each store, but refused to release how much each individual store released through the SNAP program, citing Exemption 4. Argus Leader sued, and the trial court held that while releasing store level data might cause some competitive harm, USDA failed to show it would cause substantial competitive harm under the National Parks standard. The Eighth Circuit affirmed.

The Supreme Court reversed, holding that because “confidential” was left undefined by the statute, the Court looks to the ordinary meaning of the word. This means, at least, any information that the owner treats private and is communicated with the knowledge that the party will keep it private. The Court rejected the National Parks test as "inappropriately resort[ing] to legislative history before consulting the statute’s text and structure," among other things, in fashioning the substantial competitive harm test.

In its decision, the Court left open the question of whether Exemption 4 applies to information that is “customarily kept private, or at least closely held, by the person imparting it,” but without “assurances that the government will keep it private.” Since Argus Leader, the D.C. Circuit has declined to rule on that issue.

Justice Breyer's dissent in Argus Leader, joined by Justices Ginsburg and Sotomayor, notes that FOIA’s exemptions are to be “narrowly construed” in favor of “broad disclosure of Government records.” Consequently, he argues that there should be some showing of “genuine harm to an owner’s economic or business interests” to satisfy Exemption 4, and that "a tool used to probe the relationship between government and business should not be unavailable whenever government and business wish it so."

Prior to Argus Leader, courts used variants of two tests to determine whether information qualified as confidential. First, in what is often referred to as the “National Parks test,” named for the case in which the test was formulated, information is “confidential” under Exemption 4 if its release would “likely. . . have either of the following effects: (1) to impair the Government’s ability to obtain the necessary information in the future; or (2) to cause substantial harm to the competitive position of the person from whom the information was obtained.” Following an alternative test, the U.S. Court of Appeals for the D.C. Circuit applies the National Parks test only where the information was submitted “under compulsion.’”

Strategies for Challenging Withheld Records as Commercial or Financial Information

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undefinedExemption 4 and the Foreseeable Harm Standard
The Supreme Court's decision in Argus Leader did not address the Foreseeable Harm Standard, which Congress added to the statute in 2016. Because the Argus Leader 's request was submitted before the 2016 amendments it was not governed by the foreseeable harm standard. Amicus briefs submitted in support of Argus Leader in the Supreme Court argued that the foreseeable harm standard may significantly limit the effect of the court's decision.

Since Argus Leader, only one appellate court has addressed the the foreseeable harm standard and Exemption 4, along with a handful of one district courts. In 2022, the Second Circuit found the government satisfied the foreseeable harm standard under Exemption 4. First, the court found that the "interests" protected by Exemption 4 for foreseeable harm purposes are "the commercial or financial interests of the submitter in information that is of a type held in confidence and not disclosed to any member of the public by the person to whom it belongs." The Second Circuit rejected the government's argument that the "interest" was "simply 'confidentiality'"—which some district courts have found (discussed below)—ruling that argument was "belied by both the structure of the statute and common sense. However, the Second Circuit also rejected the plaintiff's argument that the foreseeable harm should be evaluated based on a "measurable diminution in economic value." The court ultimately ruled the government adequately demonstrated that the company's "competitors would benefit from disclosure, and a benefit to competitors would necessarily be a detriment causing harm" to the company, and so met its burden under Exemption 4 and the foreseeable harm standard.

District court cases

As the Second Circuit noted in Seife, "there are two primary competing district court interpretations of the interests protected by Exemption 4."

Under one interpretation, which the Seife court rejected, Exemption 4 protects confidentiality itself. The lead case advancing this interpretation is American Small Business League v. Department of Defense, in which Judge William Alsup of the Northern District of California held that "the relevant protected interest is that of the information's confidentiality — that is, its private nature." Since the requested information was held in confidence by the submitter and given to the government with implied assurances of confidentiality, the court found the foreseeable harm standard was satisfied.

By contrast, the second interpretation is that Exemption 4 protects against competitive harm, such as harm to financial or economic interests. In 2019, Chief Judge Howell of the District Court for the District of Columbia held in Center for for Investigative Reporting v. U.S. Customs & Border Protection that the foreseeable harm standard imposes a heightened showing from agencies to withhold records under Exemption 4. In denying the agency's motion for summary judgment, she wrote:"The foreseeable-harm requirement, as applied to Exemption 4, enhances the useful “tool” of FOIA. To meet this requirement, the defendants must explain how disclosing, in whole or in part, the specific information withheld under Exemption 4 would harm an interest protected by this exemption, such as by causing “genuine harm to [the submitter's] economic or business interests,” id. at 2369, and thereby dissuading others from submitting similar information to the government, see Nat'l Parks, 498 F.2d at 768 (explaining that Exemption 4 “is intended to encourage individuals to provide certain kinds of confidential information to the Government” (quoting Soucie v. David, 448 F.2d 1067, 1078 (D.C. Cir. 1971), and to “protect[ ] persons who submit financial or commercial data to government agencies from the competitive disadvantages which would result from its publication”)."Because the agency did not meet its threshold burden of showing that withheld information fell within the scope of Exemption 4, the court held that the agency also failed to meet the foreseeable harm standard. Other district courts have agreed with this analysis.

In one of the first district court cases to evaluate the relationship between Exemption 4 and the foreseeable harm standard, Center for Investigative Reporting v. Department of Labor, the government argued that applying the foreseeable harm standard at all would render Argus Leader decision meaningless. The court rejected this argument.
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Pre-Disclosure Notification
Under Executive Order 12600, agencies must notify records submitters upon receiving a FOIA request for “records provided to the government by a submitter that arguably contain material exempt from release under Exemption 4” that the agencies believe might have to be released.

The agencies must “afford the submitter a reasonable period of time in which the submitter or its designee may object to the disclosure of any specified portion of the information and to state all grounds upon which disclosure is opposed.” Consult the agency’s FOIA regulations for specific details on its handling of pre-disclosure notifications.

The consult will often require additional time and may consequently go beyond the 20-day statutory deadline.

Reverse FOIA Lawsuits
See also Reverse FOIA Lawsuits

When an agency releases information that the submitter of the information believes should have been withheld under Exemption 4, the submitter may bring a “reverse FOIA” suit against the agency under the Administrative Procedure Act to challenge its decision.