William A. McConagha > Latham & Watkins LLP > Los Angeles, United States > Lawyer Profile
Latham & Watkins LLP Offices

355 SOUTH GRAND AVENUE
LOS ANGELES, CA 90071-1560
CALIFORNIA
United States
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William A. McConagha

Position
Bill McConagha, a former Associate Chief Counsel and Assistant Commissioner at the US Food and Drug Administration (FDA), is a nationally recognized life sciences attorney who advises clients on a range of complex issues spanning the FDA-regulated product life cycle, from premarket development and clinical trials, through product launch, post-market safety reporting, and manufacturing requirements, including cGMP.
Bill draws on extensive federal government experience to represent companies across the FDA’s regulatory spectrum, including companies that manufacture or market pharmaceuticals, medical devices, biologics, foods, tobacco, and cosmetics. He helps clients navigate:
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- FDA compliance, including preparing for and managing FDA inspections, responding to FDA 483s and warning letters, and complying with post-market safety requirements
- FDA regulatory issues, including pre- and post-market requirements and related commercial activities such as product importation and supply chain oversight
- FDA-related diligence and regulatory counsel, including negotiating representations and warranties, in corporate transactions
- Internal investigations involving clinical trial oversight, post-market safety reporting, and risk management
A recognized industry leader, he worked at FDA for 17 years in various high-level roles and served as a Health Policy Advisor on the Senate Committee on Health, Education, Labor, and Pensions (HELP).
During his tenure in public service, he received the following awards: Secretary’s Award for Distinguished Service, Department of Health and Human Services; Excellence in Legal Services, Office of the General Counsel, Department of Health and Human Services; Commissioner’s Special Recognition Award, FDA; Commissioner’s Special Citation, FDA; and the Director’s Award for Outstanding Service, FDA’s Office of Criminal Investigations.
Lawyer Rankings
United States > Healthcare > Life sciences
(Leading partners)Latham & Watkins LLP’s client base ranges from globally recognized life sciences businesses to biopharma and biotech start-ups. The busy practice is active across a range of life sciences industry sectors, from pharmaceuticals and biotechnology to cosmeceuticals and food tech. The team’s key areas of activity include complex corporate transactions such as M&A, with experts including Julie Scallen. Also on the transactional side, Shayne Kennedy focuses on capital markets along with Matthew Bush and Nathan Ajiashvili, while Cheston Larson advises on financing. Through its development of licensing structures and facilitation of commercial transactions, the team has been active in the funding of drug development and commercialization. The firm also handles litigation matters such as IP disputes, counting on experts such as Arlene Chow, as well as regulatory and legislative strategies; Ben Haas is a key figure in the latter. Among the practice’s key figures are also John Manthei
and Elizabeth M. Richards, both experts in FDA regulatory matters, and Terra Reynolds, in white-collar defense and investigations. In 2024, litigation and regulatory specialists Jennifer L. Bragg and William McConagha joined the practice from Skadden, Arps, Slate, Meagher & Flom LLP, and in April 2025, Kate Hillier joined from Cooley LLP.
United States > Dispute resolution > Corporate investigations and white-collar criminal defense
Latham & Watkins LLP offers strategic guidance to clients navigating complex regulatory challenges, government investigations, and high-stakes litigations. The firm’s white-collar practice specializes in handling matters related to securities fraud, antitrust violations, bribery, and other matters. Alice S. Fisher, a leading lawyer in the white-collar field, is highly regarded for her extensive expertise in corporate investigations and enforcement matters. She is joined by Douglas Greenburg, who brings great experience in white-collar criminal matters and SEC enforcement proceedings. Both are based in Washington DC and are celebrated for their impressive legal acumen and leadership within their respective areas of specialization. Kevin Andrew Chambers in Washington DC who draws on government experience to represent clients in white-collar, securities, and professional liability matters. Terra Reynolds in Chicago focuses on healthcare and life sciences, defending clients against healthcare fraud allegations, including the FCA and AKS. Doug Yatter in New York advises clients in financial services and fintech on government inquiries, internal investigations, and regulatory issues. Jude Volek , Benjamin Naftalis also in New York represent clients in regulatory enforcement matters, government and internal investigations. Jennifer Bragg , William McConagha, and Margaret Graham joined in 2024, and Jason Ohta was promoted in 2024, further strengthening the firm’s bench.
Lawyer Rankings
- Leading partners United States > Healthcare > Life sciences
- Life sciences United States > Healthcare
- Corporate investigations and white-collar criminal defense United States > Dispute resolution
Top Tier Firm Rankings
- Insurance > Advice to policyholders
- Dispute resolution > Appellate: courts of appeals / Appellate: supreme courts (states and federal)
- Finance > Capital markets: debt offerings
- Finance > Capital markets: equity offerings
- Finance > Capital markets: global offerings
- Finance > Capital markets: high-yield debt offerings
- Antitrust > Cartel
- International trade and national security > CFIUS
- Antitrust > Civil litigation/class actions: defense
- Finance > Commercial lending
- Finance > Commercial lending: Advice to bank lenders
- Intellectual property > Copyright
- Media, technology and telecoms > Cyber law (including data privacy and data protection)
- Labor and employment > Employee benefits, executive compensation and retirement plans: transactional
- Energy > Energy transactions: electric power
- Energy > Energy transactions: oil and gas
- Environment > Environment: litigation
- Environment > Environment: regulatory
- Environment > Environment: transactional
- Finance > Fintech
- Dispute resolution > General commercial disputes
- Real estate > Land use/zoning
- Intellectual property > Patents: licensing
- Healthcare > Life sciences
- Dispute resolution > M&A litigation: defense
- M&A/corporate and commercial > M&A: large deals ($1bn+)
- Media, technology and telecoms > Media and entertainment: litigation
- Media, technology and telecoms > Media and entertainment: transactional
- Antitrust > Merger control
- International trade and national security > National Security
- Intellectual property > Patents: licensing
- Intellectual property > Patents: licensing
- Intellectual property > Patents: litigation (full coverage)
- Intellectual property > Patents: litigation (International Trade Commission)
- M&A/corporate and commercial > Private equity buyouts: large deals ($500m+)
- Dispute resolution > Product liability, mass tort and class action - defense: consumer products (including tobacco)
- Dispute resolution > Product liability, mass tort and class action - defense: toxic tort
- Finance > Project finance
- Real estate > Real estate
- Real estate > Real estate investment trusts (REITs)
- Energy > Renewable/alternative power
- Finance > Restructuring (including bankruptcy): corporate
- Dispute resolution > Securities litigation: defense
- M&A/corporate and commercial > Shareholder activism
- Industry focus > Sport
- Finance > Structured finance: derivatives and structured products
- Finance > Structured finance: securitization
- Media, technology and telecoms > Technology transactions
- Media, technology and telecoms > Telecoms and broadcast: regulatory
- Media, technology and telecoms > Telecoms and broadcast: transactions
- Intellectual property > Trade secrets (litigation and non-contentious matters)
- Tax > US taxes: contentious
- Tax > US taxes: non-contentious
- M&A/corporate and commercial > Venture capital and emerging companies
Firm Rankings
- M&A/corporate and commercial > Corporate governance
- International trade and national security > Customs, export controls and economic sanctions
- Industry focus > Education
- Energy > Energy regulation: electric power
- Energy > Energy regulation: oil and gas
- Government > Government contracts
- Insurance > Insurance: non-contentious
- Dispute resolution > International litigation
- Dispute resolution > Leading trial lawyers
- Investment fund formation and management > Private equity funds (including venture capital)
- Dispute resolution > Financial services litigation
- Healthcare > Health insurers
- Media, technology and telecoms > Outsourcing
- Healthcare > Service providers
- Dispute resolution > International arbitration
- Dispute resolution > Leading trial lawyers
- Intellectual property > Trademarks: litigation
- Dispute resolution > Leading trial lawyers
- Finance > Financial services regulation
- Finance > Commercial lending > Advice to direct lenders/private credit
- Dispute resolution > Corporate investigations and white-collar criminal defense