John Flock

Principal at John Flock PLLC

John Flock is a trusted legal adviser to sophisticated global companies, who have relied on him to achieve successful results in litigation, licensing, creating or acquiring valuable patents, and developing successful IP policies.

Courtroom-tested experience

With nine years as a criminal prosecutor in New York and more than 25 years in high-stakes patent litigation, having handled over 100 patent litigations and received professional achievement awards, including cases selected in American Law Journal Top Jury Verdicts, Mr Flock brings a unique expertise to helping companies on litigation and trial strategy, counselling, licensing, and selection and management of outside counsel.

Identifying valuable patents

Mr Flock’s expertise in identifying valuable patents that can withstand the test of hard-fought litigation (and, just as importantly, knowing what makes patents vulnerable to challenge) has led IP-savvy companies to seek his advice on licensing, patent acquisition and monetisation programmes, including advising Lenovo on patent matters in its $2.9 billion acquisition of Motorola.

Helping companies develop successful IP policies

Companies have turned to Mr Flock for advice on improving their IP policies and procedures. Collaborating with in-house legal, business, engineering and financial teams, he has advised on policies and procedures to create stronger intellectual property, selecting patents for monetisation and minimising the exposure of the company to legal challenges and the intellectual property of others.


Mr Flock has been recognised for excellence in practice, including in Managing Intellectual Property, The Legal 500 US and Benchmark Plaintiff, and by the Asian American Bar Association of New York (of which he is a Past President) for his “commitment to justice” and his “exemplary leadership in the Asian-American community”. On the lighter side, he has twice appeared on US prime time TV programme Entertainment Tonight commenting on legal issues related to celebrities.

IAM says

John Flock is highly appreciated not just for his trial chops but for his astuteness as a litigation and all-round IP strategist. He is well-positioned to serve as a trusted adviser to in-house counsel and the C-suite – a role he is now performing at his newly established, self-titled firm.


  • Legal
  • Licensing

Firm details

John Flock PLLC
126 E 56th Street
Suite 3L
New York NY 10022
United States

Contact details