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Natalie E. Rainer

Natalie Rainer is a partner and a member of the Health Care and FDA practice. She focuses her practice primarily in the food and beverage industry. Natalie practices food and drug law, advising clients on regulatory requirements for foods, dietary supplements, cosmetics, and food and drug packaging in jurisdictions around the world, including North America, Latin America, Europe, Asia, and the Middle East.

Natalie has in-depth experience in evaluating the regulatory status of food additives, color additives, and food-contact materials. She counsels companies on advertising and labeling requirements, including claim substantiation, nutrition labeling, menu labeling, and environmental claims. She also provides guidance regarding compliance with U.S. Department of Agriculture regulations, including the Bioengineered Labeling rules, organic rules, and regulations related to additives in meat and poultry products. Natalie enjoys public speaking and also provides clients with customized training on labeling, claims, and regulatory frameworks for foods and other FDA-regulated products.  

In addition to regulatory compliance advice, Natalie counsels clients facing enforcement actions, recalls, and threats of litigation.  

Natalie understands the practical application of California’s Proposition 65 and assists in defending against Proposition 65 enforcement actions. In addition, she advises on compliance with other California laws and regulations, including SB 343 (affecting recyclability claims and the chasing arrows sign), SB 54 (on extended producer responsibility for packaging materials), Proposition 12 (regarding animal husbandry), Rigid Plastic Packaging Container requirements, slack fill, and reusable grocery bag certification. Natalie’s experience working in bioethics during law school and attending cooking school gives her a unique perspective on her legal practice.

Prior to joining the firm, Natalie served as a partner in the San Francisco office of an international law firm. She focused her practice in food and drug law in global jurisdictions including North America, Europe, Asia, and the Middle East.

  • Speaker, "The Path to a Favorable FDA Status for Novel Fats," Alternative Fats & Oils Summit, 23-25 April 2024
  • Presenter, "Cell Culture and Novel Products: What’s GRAS and What’s Achievable?" IAFP
    2024 Annual Meeting, July 2024
  • Presenter, 2024 FPSA Executive Exchange & Conference, March 2024
  • Speaker, “CLE program on Defending PFAS Liability Cases: Strategies for Challenging Causation and Standing,” Strafford, 20 March 2024
  • Speaker, “California's Ban on Food and Color Additives (AB 418),” EXPO Food Processing, 13 February 2024
  • Presenter, “FDA Final Rule on Food Traceability: A Heavy Burden on Industry,” American Agricultural Law Association Annual Agricultural Law Symposium, November 2023
  • Interview, "HSU Untied with Natalie Rainer, Partner at K&L Gates," HSU Untied, November 2022.
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