Gregory A. "Greg" Castanias
About Gregory A. Castanias
Gregory A. Castanias is a lawyer based in Washington, DC and has been recognized in The Best Lawyers in America® since 2015. Gregory A. Castanias is recognized in the following practice areas:
- Washington, District of Columbia
- Appellate Practice
- Litigation - Patent
Current Firm: Jones Day
Education: Indiana University Maurer School of Law, J.D., graduated 1994
Location: Washington, DC
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
David T. Dekker is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law and Litigation - Construction. David T., who practices law in Washington, District of Columbia, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David T. is held by other top lawyers in the same geographic and legal practice area.
Kendal handles domestic and cross-border transactions, including mergers and acquisitions, joint ventures and strategic alliances, as well as licensing, distribution and franchise matters. What do you focus on? Franchising With over 25 years of experience, I counsel companies expanding through master franchising, area development franchising, international franchising, management contracts, joint venture agreements, licensing agreements and product distribution arrangements throughout the wor...
Conflict is at the core of many divorces and can produce volatile emotions. Divorcing clients appreciate the combination of strength and compassion Katherine brings to her cases, especially when substance abuse, mental illness, domestic violence or contested child custody issues are involved. Katherine firmly believes in putting the children first in every divorce situation and in trying to reduce conflict between divorcing parents. A skilled problem-solver, Katherine acts decisively on behal...
Patricia M. Weaver is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Bet-the-Company Litigation, Commercial Litigation and Mediation. Patricia M., who practices law in Bethesda, Maryland, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patricia M. is held by other top lawyers in the same geographic and legal practice area.
Mike Prame is seasoned trial attorney and counselor, with over two decades of experience representing clients in matters related to retirement and healthcare plans. His clientele is largely based in three primary sectors. First, he counsels businesses with underfunded defined benefit pension plans, particularly those plans under scrutiny by the PBGC. Second, Mike advises actuarial, benefit/investment consulting and recordkeeping firms that provide services in connection with retirement and he...
David M. Perlman is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Oil and Gas Law. David M., who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David M. is held by other top lawyers in the same geographic and legal practice area.
Clients hire Jacob because his aggressive, tenacious, creative and proactive strategies often put the other side on its heels, and because he gets successful results in investigations and litigation. Jacob has secured superior results for his securities enforcement, white-collar criminal defense, FCPA and internal and government investigations clients. Jacob brings his experience and outstanding reputation, including for creative strategies and solutions, to the defense of investigations, lit...
Mr. Siegel represents media clients in First Amendment, intellectual property, and entertainment law cases in trial and appellate courts throughout every region of the country. He also provides pre-broadcast and pre-publication counseling to a wide range of print and web publishers, television networks, and film producers. Mr. Siegel's litigation practice covers a variety of issues for media clients, and has included successfully defending ESPN in defamation suits brought by major sports pers...
Adam J. August is a partner in Holland & Knight's Corporate/Mergers & Acquisitions Practice Group. Mr. August counsels public and private company clients in a variety of industries including information technology, government contracting, software and telecommunications. He has been actively involved in merger, acquisition and disposition transactions with a combined value more than $1 billion, and financing/investment transactions and securities offerings worth more than $600 million...
Explore and Learn
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
What AI Visibility Means for Lawyers
by Josh Rupall and Bryan Driscoll
AI tools increasingly interpret lawyers public information. Clear, consistent and credible sources help ensure they describe legal expertise accurately.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
Can You Go to Jail at an Arraignment?
by Bryan Driscoll
Understanding What Happens at Your First Court Appearance.
The Best Lawyers in France 2027: Peer-Reviewed Excellence
by Jamilla Tabbara
Seventeen editions of peer trust, a growing profession and a dynamic legal market.
Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland
by Jamilla Tabbara
Celebrating the legal professionals throughout Central Europe.
When Is It Too Late to Stop Foreclosure?
by Bryan Driscoll
Understanding the foreclosure timeline, critical deadlines and the legal options that may still protect your home.
The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement
by Grace Greer
A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.
How AI Is Changing the Way Clients Find Lawyers
by Jamilla Tabbara
Best Lawyers CEO Phil Greer explains how AI-driven search tools are reshaping legal marketing and why credibility markers matter.