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Jillian R. Guernsey

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One Embarcadero Center, Suite 2110, San Francisco, CA 94111

Alcohol Beverage and Non-Beverage Alcohol Products, California's Proposition 65, Cosmetics and 5 more

About Jillian R. Guernsey

Jillian Guernsey counsels domestic and foreign clients on regulatory and compliance matters related to food, wine and other alcoholic beverages, drugs, dietary supplements, food and drug packaging, and cosmetics.

Jillian assists clients in obtaining regulatory clearances for food additives, food processing aids, and food contact materials from the U.S. Food and Drug Administration (FDA), the U.S. Alcohol and Tobacco Tax and Trade Bureau (TTB), Health Canada, and other comparable international agencies. She advises companies on establishing self-determined Generally Recognized as Safe (GRAS) positions and assists in preparing GRAS Notifications to FDA. Jillian also advises clients on compliance with state and local laws, such as California’s Proposition 65, the Plastic Pollution Prevention and Packaging Producer Responsibility Act (SB 54), Green Chemistry, and extended producer responsibility laws in the state.

Prior to joining Keller and Heckman, Jillian was Operations Director at Berryessa Gap Vineyards and has worked as a harvest intern at wineries in Italy, New Zealand, California, and Virginia. Her extensive experience in the food and wine industry also includes a B.S. degree in Viticulture and Enology from the University of California, Davis, and a Classic Culinary Arts Certificate from the French Culinary Institute in Campbell, California.

While in law school, Jillian was Co-Editor-in-Chief of the Hastings Environmental Law Journal, a Teaching Assistant for several advanced legal writing courses, and participated in the Corporate Counsel Externship Program at a California-based winery.

Jillian’s focus within the food and beverage industry during her education and career has provided her with invaluable insight when assisting clients with the challenges faced by the ever-evolving industry.

Insights & In the News

September 2025 Bounty Hunter Plaintiff Claims

10.21.2025
Publication

May 2025 Bounty Hunter Plaintiff Claims

06.17.2025
Publication

April 2025 Bounty Hunter Plaintiff Claims

05.14.2025
Publication

Best Law Firms Features Keller and Heckman in 2026 Edition

Press Release
11.06.2025

 

Jillian R. Guernsey (San Francisco, California) View website

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Services

Areas of Law

  • Other 8
    • Alcohol Beverage and Non-Beverage Alcohol Products
    • California's Proposition 65
    • Cosmetics
    • Dietary Supplements
    • Food and Drug
    • Food and Drug Packaging
    • Food & Life Sciences
    • Packaging

Practice Details

  • Firm Information
    Position
    Associate
    Firm Name
    Keller and Heckman LLP
  • Representative Cases & Transactions
    Cases
    Representative Matters: Provided counsel
    support to clients in submitting Food Contact Notifications (FCNs) to FDA to obtain regulatory clearances for food contact substances
    Assisted clients in the preparation of submission materials to obtain regulatory clearances for food packaging materials in jurisdictions worldwide
    Performed regulatory review of food contact materials to assess compliance with U.S., European Union (EU),
    Japanese food contact laws
    regulations
    Assisted multinational plastics manufacturers in obtaining recycling no objection letters for their plastic recycling processes
    Provided assistance to clients regarding compliance with California's Proposition 65
    other California regulations on toxics in packaging
    Assisted cosmetics companies in reviewing their product ingredients for compliance with U.S., EU, MERCOSUR,
    other international cosmetics laws
    regulations
  • Additional Links
    https://www.khlaw.com/people/jillian-r-guernsey

Experience

  • Bar Admission & Memberships
    Admissions
    2023, California
  • Education & Certifications
    Law School
    University of California College of Law, San Francisco
    Class of 2023
    J.D.
    cum laude
    Other Education
    University of California, Davis
    Class of 2013
    B.S.

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Attorneys FAQs

  • What year was this attorney first admitted to the bar?
    Jillian R. Guernsey was admitted in 2023 to the State of California.
  • How many attorneys are in this law firm?
    Keller and Heckman LLP has 80 attorneys at this location.
  • What law school did this attorney attend?
    Jillian R. Guernsey attended University of California College of Law, San Francisco.
  • What year was this attorney's law firm established?
    Keller and Heckman LLP was established in 1962.

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