A law firm for new companies, entrepreneurs, and established companies that are developing new revenues streams, technologies and products.


Strategic Expansion

We help clients create businesses, enter new markets, re-engineer business models, and increase the value of existing products and services.

Innovative Legal Advice

Innovative businesses require innovative legal advice. We develop the transactional infrastructure for companies in fields as diverse as machine learning, clean energy, digital learning and life sciences.

Technology Development

We help clients manage the development, acquisition, sale and licensing of intellectual property.


Lonnie Rosenwald is a respected leader, senior technology executive and experienced legal counsel recognized for her vision, innovative thinking and successful development and implementation of strategies for path-breaking ventures. She is a trusted advisor whose judgment and insights are valued by her clients.

Lonnie has deep and broad experience in innovations that are reshaping the technology industry, law and investments. She has developed and led high-performing teams that deliver results in both Fortune 50 and start-up environments. Before launching 300degrees, she served as vice president and lead counsel for patent funds that create and commercialize inventions at Intellectual Ventures, the pioneer in patent fund management. While at Intellectual Ventures, she founded legal structures to enable the commercialization of patents, and helped launch numerous startups and investment funds, including a fourth generation nuclear power company, several communications companies based on metamaterials technology, a fund that collaborates with the Gates Foundation to develop products for the developing world, and a scientific lab.

She was formerly chief technology counsel and vice president for corporate development at AT&T Wireless, and an intellectual property attorney at K&L Gates, where she supported Microsoft and other technologies clients. She attended the University of Washington School of Law, where she was editor-in-chief of the Washington Law Review. Lonnie was a clerk for the U.S. Court of Appeals for the Ninth Circuit. Her undergraduate degree is from Stanford University.

Lonnie serves on the advisory board of SocialPay, a fintech start-up, and is a Venture Partner with Spike Ventures, which invests in companies founded by Stanford alumni.

She is active in the Intellectual Property Owners association (IPO), serving on the Women in IP, Unconscious Bias and Women Inventors committees. She is Chair of the Board of Trustees of Cornish College of the Arts, has chaired the Alumni Association at the University of Washington School of Law, and currently serves on the school's 2016-20 Campaign and Advancement Committees. She has been an active fundraiser for the Center for Children and Youth Justice. Lonnie is passionate about inventions and ideas, as well as educating and mentoring young adults and new professionals.

She has 2 grown daughters and lives in Seattle, where she docks her powerboat and kayak.

Lisa has been the General Counsel of numerous companies--large and emerging, domestic and global--counseling them through founding, fundraising, operations and successful exit. Lisa advises business leaders and entrepreneurs, developing business-oriented, strategic solutions to legal issues. She is recognized for her intellect, drive, and personal attention to her clients.

A seasoned corporate lawyer, she began her career on Wall Street working on financings and public offerings. Lisa built her career in-house at Amoco/BP, working at US headquarters in Chicago and European headquarters in Geneva, Switzerland. She moved to Seattle to be Starbucks’ first international lawyer, a member of the business development team negotiating the joint venture and licensing deals that brought Starbucks to Asia Pacific and the acquisition of London-based Seattle Coffee Company, Starbucks’ first entry in Europe. Lisa then joined the Corporate/Securities group of Perkins Coie, doing venture and debt financings and M&A.

Lisa’s General Counsel posts include Callison, a private equity-backed international architecture and design firm, which she helped turn around. After the successful sale of Callison to a Dutch public company she served as Eddie Bauer’s interim General Counsel. Until the end of 2019 she was Chief Legal Officer at an East Coast fintech. She returned to Seattle and private practice in 2020.

During their exciting start-up and early stages, Lisa has served as outside General Counsel and advisor to a diverse suite of companies, including an education platform SaaS company, a biodiesel manufacturing company, and an online social network company. Lisa is currently a member of the advisory board of ZenDoc, a machine learning-enabled contract management start-up.

Pursuing her dedication to public service, Lisa joined the State Department as a Foreign Service Officer, posted to the US Embassy in Paris. Deeply committed to public education, Lisa was elected twice to the Mercer Island School Board, where she was made President. She has also served on other nonprofit boards. Currently, she is helping launch, and serving as General Counsel to, Restart.us, a nonprofit formed to help reopen the Washington State and US economies in the wake of Covid-19.

Lisa holds a BA in International Studies from Johns Hopkins University and a JD from Georgetown. She attended SAIS, the Johns Hopkins School of Advanced International Studies in Bologna, Italy. She holds a certificate in international law from the Parker School at Columbia Law School. She speaks good French, decent Spanish and passing Italian. Her expired diplomatic passport sits in her desk drawer.

Lisa is delighted to offer her extensive background and passion for helping businesses grow and thrive to her clients at 300degrees. She is admitted to the bar in Washington and New York.

Lisa lives in Seattle and has three grown sons. On the weekends you can find her in a yoga studio, in the kitchen, or outdoors in the beautiful PNW hiking, cycling, or skiing.


300degrees, PLLC

2812 Fairview Ave E
Seattle, WA 98102-3014