Avigail Kifer



  • San Francisco


Avigail Kifer applies her expertise in industrial organization economics and quantitative marketing to antitrust and competition, merger review, and healthcare matters. Dr. Kifer works with attorneys and experts on all phases of merger review and the litigation process, including deposition and trial. Her industry experience includes internet advertising, retail, technology, transportation, and life sciences. She has experience conducting statistical analysis of proprietary big data. Women@ has recognized Dr. Kifer as an “up-and-coming” woman professional in the competition space.

Antitrust and competition

Dr. Kifer assesses class certification, liability, and damages claims arising in a variety of competition matters. She has addressed issues involving bundling and tying, horizontal price fixing, vertical exclusionary practices, and attempted monopolization. In healthcare, she has analyzed relevant markets, and evaluated allegations of market power, competitive effects, and exclusionary conduct.

Technology and big data

Dr. Kifer conducts statistical analyses and simulations on structured data, as well as content analyses of unstructured data. She consults and publishes on issues related to e-commerce, online advertising, and mobile apps. Dr. Kifer has assessed allegations related to self-preferencing, algorithmic collusion, conglomerate effects, and data theories of harm.

Merger review

Dr. Kifer has consulted on multiple merger investigations, both on behalf of regulatory agencies and merging parties. She has worked on transactions in several industries, notably technology, agriculture, insurance, manufacturing, and telecommunications.

Dr. Kifer submitted comments on the Draft Merger Guidelines released by the Department of Justice (DOJ) and the Federal Trade Commission (FTC) in July 2023 and provided feedback to the Multilateral Pharmaceutical Merger Task Force in 2021. She also submitted comments on the DOJ and FTC’s Draft Vertical Merger Guidelines in January 2020.

Dr. Kifer serves as a vice chair of the Technology Committee in the American Bar Association Section of Antitrust Law. She often speaks and publishes on mergers and competition issues related to tech and big data and healthcare. In 2022, Dr. Kifer won an Antitrust Writing Award from Concurrences for her coauthored article, “Free Can Make Cents: How to Think About ‘Free’ in Competitive Markets.” She has also served as a guest lecturer in classes at Columbia Law School and Columbia Business School.


Algorithms, Artificial Intelligence, and Antitrust: An Overview


GCR Live: Women in Antitrust 2023

Press Release

Cornerstone Research Staff and Affiliated Experts Submit Comments on the Joint FTC-DOJ Draft Merger Guidelines


The Cambridge Handbook of Marketing and the Law


The Price of Free

Press Release

Cornerstone Research Promotes Ten Senior Staff to Principal


Sidibe et al. v. Sutter Health


Meta/Kustomer Merger

  • “The Notorious B.I.G. Tech Platforms,” American Bar Association Section of Antitrust Law, 6 October 2021
  • “National Why Antitrust—Economists,” American Bar Association Section of Antitrust Law and American Bar Association Membership, Diversity & Inclusion Committee, 20 May 2021
  • Women@ Initiative for “Up-And-Coming” Women Competition Professionals, 17 June 2019
  • “Legal Applications of Marketing Theory,” Harvard Law School, 3 May 2019