Mark Mcguinness

Mark Mcguinness

Yes Legal of San Diego, LC

San Diego
California
Licensed in
CA
Thomas Jefferson School of Law,

"Mark is quick, effective and an absolute pleasure to work with."

5.0 5
Clear Communication
Response Time
Knowledgeable
Meets Deadlines
out of 4 reviews
About
I’m a California attorney providing contract-based legal services and civil litigation support for individuals, businesses, and other law firms. I handle drafting, research, negotiations, and case strategy, with a strong focus on clear writing and practical risk control.

My background includes work on both plaintiff and defense-side matters, including insurance defense and employer-side defense, as well as filing complaints and pursuing claims. I have also worked on high-stakes criminal cases, including Three Strikes and federal life cases.

I regularly assist with limited-scope projects such as contract review and revision, motion drafting,
… read more discovery strategy, settlement negotiation, and targeted legal analysis. I aim to deliver reliable, well-reasoned work that helps clients move forward efficiently.
2
Repeat
clients
5
Projects on
upcounsel
4
Years
experience
A few hours
Response Time
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Representative Clients

Client Reviews

5.0
Clear Communication
Response Time
Knowledgeable
Meets Deadlines
out of 4 reviews
Clear Communication
Response Time
Knowledgeable
Meets Deadlines

"Mark is quick, effective and an absolute pleasure to work with."

Consult on Corporate Restructure
Posted on Mar 6, 2026
Clear Communication
Response Time
Knowledgeable
Meets Deadlines

"Mark did fantastic, fast and thorough work. I plan to work with him again."

Assist with Other Business Formation Matter
Posted on Feb 9, 2026
Clear Communication
Response Time
Knowledgeable
Meets Deadlines

"Mark handled my case with skill and clarity. The situation was stressful and complicated, but he walked me through every step and pushed the case toward a strong result. We settled for a six figure amount and I felt protected the entire time. I would hire him again without hesitation."

High value civil dispute with significant financial exposure
Non-UpCounsel Client
Clear Communication
Response Time
Knowledgeable
Meets Deadlines

"Was able to stay out of Court and swiftly resolve a complicated matter"

Complex Business Litigation
Non-UpCounsel Client

Work History

Yes Legal

Owner

May 2022 - Present

I run Yes Legal and support clients and law firms with litigation, criminal defense, and contract based legal work. I handle research, drafting, negotiations, and limited scope matters. I have worked with solos and large firms and have experience in plaintiff and defense work. I manage all parts of the job, including admin and case strategy.

May 2022 - Present

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