Patrick W. Dennis > Gibson, Dunn & Crutcher LLP > Los Angeles, United States > Lawyer Profile
Gibson, Dunn & Crutcher LLP Offices

333 SOUTH GRAND AVENUE
LOS ANGELES, CA 90071-3197
CALIFORNIA
United States
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Patrick W. Dennis

Work Department
Environmental Litigation and Mass Tort
Position
Patrick W. Dennis is a partner in the Los Angeles office of Gibson, Dunn & Crutcher. He is a member of the Environmental Litigation and Mass Tort Practice Group. Pat represents clients in environmental litigation, toxic tort lawsuits, public and private enforcement actions, private party clean-up cost recovery, diligence/transactional matters with environmental liabilities, and complex permit/entitlement projects. He has extensive experience with all federal and state agencies for air quality, hazardous waste, and water quality. Represents buyers and sellers of major industrial facilities worldwide and contaminated real estate for redevelopment. He has served as lead litigation counsel for numerous clean-up cost recovery, toxic tort, enforcement and Superfund matters, including natural resource damage actions brought by the US.
Lawyer Rankings
United States > Environment > Environment: litigation
(Hall of Fame)Gibson, Dunn & Crutcher LLP is a powerhouse in high-stakes environmental litigation and enforcement, specializing in complex civil and criminal cases with significant corporate risks. It has achieved numerous victories for global corporations, excelling in trial strategies, dispositive motions, favorable settlements, and appellate decisions. It is also a frontrunner in climate change litigation, handling cases involving greenhouse gas emissions with an innovative approach. Alongside litigation, it offers environmental diligence, compliance, and regulatory advice, working seamlessly with other practices like White Collar and Energy Regulatory. Stacie B. Fletcher is recognized as a top environmental lawyer, with significant successes in high-profile enforcement cases involving the U.S. EPA, state agencies, and major corporations. Daniel Nelson , a nationally recognized litigator, is known for his strong track record in complex environmental, mass tort, class action, and antitrust cases. Both work from the Washington, DC. office. Patrick W. Dennis , based in Los Angeles, is a highly regarded environmental attorney with expertise across industries like manufacturing, energy, aerospace, and oil and gas.
Lawyer Rankings
- Environment: litigation United States > Environment
- Hall of Fame United States > Environment > Environment: litigation
Top Tier Firm Rankings
- Dispute resolution > Appellate: courts of appeals / Appellate: supreme courts (states and federal)
- Antitrust > Cartel
- Antitrust > Civil litigation/class actions: defense
- Energy > Energy transactions: oil and gas
- Environment > Environment: litigation
- Dispute resolution > General commercial disputes
- Dispute resolution > International litigation
- Labor and employment > Labor and employment disputes (including collective actions)
- Real estate > Land use/zoning
- Media, technology and telecoms > Media and entertainment: litigation
- Media, technology and telecoms > Outsourcing
- Transport > Rail and road: litigation and regulation
- Real estate > Real estate
- Real estate > Real estate finance
- Dispute resolution > Securities litigation: defense
Firm Rankings
- Insurance > Advice to insurers
- Finance > Capital markets: debt offerings
- M&A/corporate and commercial > Corporate governance
- Media, technology and telecoms > Cyber law (including data privacy and data protection)
- Industry focus > Education
- Energy > Energy transactions: electric power
- M&A/corporate and commercial > M&A: large deals ($1bn+)
- Media, technology and telecoms > Media and entertainment: transactional
- Intellectual property > Patents: litigation (full coverage)
- Investment fund formation and management > Private equity funds (including venture capital)
- Finance > Project finance
- Energy > Renewable/alternative power
- Finance > Restructuring (including bankruptcy): corporate
- Media, technology and telecoms > Technology transactions
- Intellectual property > Trade secrets (litigation and non-contentious matters)
- Tax > US taxes: contentious
- Tax > US taxes: non-contentious
- Transport > Aviation and air travel: finance
- Finance > Capital markets: high-yield debt offerings
- Finance > Commercial lending
- International trade and national security > Customs, export controls and economic sanctions
- Labor and employment > Employee benefits, executive compensation and retirement plans: transactional
- Energy > Energy litigation: oil and gas
- Energy > Energy regulation: electric power
- Dispute resolution > Financial services litigation
- Healthcare > Health insurers
- Dispute resolution > Leading trial lawyers
- Dispute resolution > Leading trial lawyers
- Dispute resolution > M&A litigation: defense
- Antitrust > Merger control
- M&A/corporate and commercial > Private equity buyouts: large deals ($500m+)
- Industry focus > Sport
- Finance > Capital markets: equity offerings
- Environment > Environment: transactional
- Government > Government contracts
- Dispute resolution > International arbitration
- Healthcare > Life sciences
- Finance > Structured finance: derivatives and structured products
- Intellectual property > Trademarks: litigation
- Finance > Financial services regulation
- Dispute resolution > Corporate investigations and white-collar criminal defense
- Finance > Fintech