Invesco CurrencyShares Swiss Franc Trust (FXF) S-3 Shelf registration

Exhibit 8.1

FOLEY & LARDNER LLP ATTORNEYS AT LAW   321 NORTH CLARK STREET, SUITE 3000 CHICAGO, IL 60654-4762 312.832.4500 TEL 312.832.4700 FAX WWW.FOLEY.COM   CLIENT/MATTER NUMBER 118491-0101

July 1, 2024

Invesco Specialized Products, LLC

3500 Lacey Road

Suite 700

Downers Grove, IL 60515

Re: Invesco CurrencyShares^® Swiss Franc Trust

Ladies and Gentlemen:

We have acted as legal counsel to Invesco Specialized Products, LLC, a Delaware limited liability company (the “Company”), in connection with the preparation and filing under the Securities Act of 1933, as amended (the “Securities Act”), and the rules and regulations of the Securities and Exchange Commission (the “SEC”) promulgated thereunder, of a registration statement on Form S-3 filed on or about the date hereof (the “Registration Statement”). The Registration Statement relates to the proposed issuance by the Invesco CurrencyShares^® Swiss Franc Trust (the “Trust”), an investment trust formed on June 8, 2006 under the laws of the State of New York pursuant to the terms of the Depositary Trust Agreement dated June 8, 2006 and amended as of November 13, 2008, March 6, 2012, September 5, 2017, June 4, 2018 and January 9, 2019 (as so amended, the “Trust Agreement”) between the Company, as sponsor, and The Bank of New York Mellon, a banking corporation organized under the laws of the State of New York (f/k/a The Bank of New York), as trustee (the “Trustee”), of an indeterminable number of shares, representing units of fractional undivided beneficial interest in and ownership of the Trust (the “Shares”). In connection with the issuance of the Shares, you have requested our opinion with respect to certain U.S. federal tax matters. Capitalized terms not otherwise defined herein shall have the meanings given to them in the Trust Agreement.

In rendering the opinion expressed below, we have examined and relied on the Registration Statement and originals or copies, certified or otherwise identified to our satisfaction, of the Trust Agreement and all such other documents as we have deemed necessary or appropriate in order to enable us to render the opinion expressed below.

In our examination of the foregoing documents, we have assumed, with your consent: that all documents reviewed by us are original documents, or true and accurate copies of original documents, and have not subsequently been amended; that the signatures on each original document are genuine; that each party who executed the document had proper authority and capacity; that all factual representations and statements set forth in such documents are true and correct; and that all obligations imposed by any such documents on the parties thereto have been or will be performed or satisfied in accordance with their terms.

Our opinion is based upon the Internal Revenue Code of 1986, as amended, the Treasury Regulations promulgated thereunder, judicial decisions, current rulings and pronouncements of the Internal Revenue Service (the “IRS”), and such other authorities as we have considered relevant, in effect as of the date of this letter, all of which are subject to legislative, judicial or administrative change or differing interpretation, possibly with retroactive effect. Our opinion is not binding on the IRS, and no assurance can be given that the conclusions expressed herein will not be challenged by the IRS or sustained by a court.

Based upon and subject to the foregoing, we confirm that the discussion in the Registration Statement under the caption “United States Federal Tax Consequences,” to the extent it consists of statements of law and legal conclusions, and subject to the limitations and qualifications set forth therein, constitutes our opinion as to the material U.S. federal tax consequences that apply under currently applicable law to the purchase, ownership and disposition of the Shares.

The opinion referred to above represents our best legal judgment as to the application of the U.S. federal tax laws existing as of the date of this letter. Further, the opinion referred to above is based upon the assumptions, documents, facts and representations referred to above. Any material amendments to such documents, changes in any significant facts or inaccuracy of such assumptions or representations could affect the accuracy of our opinion. Although we have made such inquiries and performed such investigations as we have deemed necessary to fulfill our professional responsibilities as counsel, we have not undertaken an independent investigation of all the relevant facts. Our opinion is based solely upon the law and the facts as they exist on the date hereof; and we disclaim any obligation to advise you of any subsequent change in law or facts or circumstances that might subsequently come to our attention.

We hereby consent to the filing of this opinion letter as an exhibit to the Registration Statement and to the use of our name where it appears in the Registration Statement. In giving this consent, we do not admit that we are within the category of persons whose consent is required by Section 7 of the Act or the rules and regulations of the SEC promulgated thereunder.

This opinion only relates to the issuance and sale of the Shares pursuant to the Registration Statement and may not be relied upon by you or any other person for any other purpose, without our prior written consent in each instance.

Very truly yours,

/s/ Foley & Lardner LLP