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With 18 offices, from New York to Los Angeles and Seattle to Orlando, we live and work in communities all over the U.S., collaborating across locations, disciplines and even borders. Our experienced, highly ranked lawyers serve businesses wherever they are and wherever they want to go.

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Am Law 100 firm with practices in Business, Digital Assets and Data Management, Intellectual Property, Labor & Employment, Litigation and Tax.

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John Carney Chairs and Speaks, Jimmy Fokas Speaks at PLI Basics of Accounting for Lawyers 2025

Webinar Series: Transforming Legacy Management Experience

Rebecca Schrote Presents on APEX Depositions at Columbus Bar Association CLE Session

To Help the New Administration Help Your Industry, You Need an Agency Strategy (Real Estate Finance Journal)

Mark has the depth of knowledge and ability to evaluate portfolios, provide freedom to operate counseling&nbsp;and acquire intellectual property rights in order to sustain long-term IP advantage and security. He helps clients fully understand the intellectual property landscape in which they are operating. Mark builds portfolios for clients in an effective risk-management fashion, providing an armor that can fight against or prevent future litigation.

Mark’s focus on biotechnology and pharmaceutical includes working on the chemistry and accessory side of cannabis with both business-to-business and business-to-consumer clients.

Mark is recognized as one of the Top 25 Intellectual Property Portfolio Managers in California by the <em>San Francisco Daily Journal</em> and <em>Los Angeles Daily Journal</em> (2010). He has been honored globally as one of the IAM Patent 1000 – The World’s Leading Patent Practitioners since 2015. Mark was formerly the Orange County office's Intellectual Property Leader.

core/freeform

J.D., Loyola Law School, 1986

B.A., University of California, Berkeley, 1983

<ul>
<li>The Legal 500 United States
<ul>
<li>Recommended in Intellectual Property: Patents: Prosecution (including re-examination and post-grant proceedings) (2024)</li>
</ul>
</li>
<li>IAM Patent 1000: The World&#8217;s Leading Patent Practitioners
<ul>
<li>California: Recommended for Patent Prosecution (2015 to 2024)</li>
</ul>
</li>
<li><em>San Francisco Daily Journal</em> and <em>Los Angeles Daily Journal</em> “Top 25 Intellectual Property Portfolio Managers in California” (2010)</li>
</ul>


Orange County

BakerHostetler attorneys, practice areas stand out in The Legal 500 annual guide

IP Intelligence Report

Forced Nationalization of Patent Monopolies Held by “Unfriendlies” in Russia

BakerHosts

Patenting All Things Cannabis: A Primer

Intellectual Property

Noncompete and Trade Secrets

IP Life Sciences and Advanced Materials

Design Patent Protection

Patent Prosecution

<ul>
<li>Mark developed a patent portfolio and strategy for stem cell therapies, compositions and cancer vaccines that would protect the composition of progenitor cells, leading to very successful acquisition.</li>
<li>Mark serves as a patent strategist and counselor for a worldwide portfolio of fuel cell, hydrogen generation and distribution technology.</li>
<li>Mark has been in patent diligence related to transactions in the computer software, medical device and energy industries.</li>
<li>A medical device developer approached Mark with a de minims patent portfolio, which resulted in Mark counseling his client through the development of an aggressive portfolio that was defensive as well as offensive. Mark continues to serve as patent strategist and counselor for the client&#8217;s now worldwide medical device patent portfolio.</li>
</ul>
<h5>Patents Invented</h5>
<ul>
<li>Inventor on U.S. Patents 6,974,223, 6,802,629 and 6,575,593 for USB and IEEE 1394 LED lighting. This portfolio is now owned by ACCO Brands. Co-inventor on a software patent for connecting advertising media with shared digital media, U.S. Patent 8,978, 059.</li>
</ul>


Mark H. Krietzman

Mark H. Krietzman

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