Leonid Kisseiv



Leonid Kisselev


I am a patent attorney working at Cascadia Intellectual Property in Seattle.  I practice in the areas of patent prosecution, trademarks, copyright, and other intellectual property-related issues.  You can reach me at (206) 381-3900 and leonid@cascadiaip.com, and my thoughts on intellectual property law can be found at our firm’s blog at http://www.seattleipblog.com.






I became a lawyer because being an intellectual property lawyer was a good way to combine my passion for science and technology and my passion for writing.

I joined the IPS because the section brings together not only lawyers with wide-ranging practices and depths of legal experiences, but also truly interesting people with whom I always enjoy talking at the IPS events.

Before I became a lawyer, I was a research scientist working at the Fred Hutchinson Cancer Research Center.

I have legal experience directing patent prosecution through foreign associates in the European Union, Canada, China, and Japan, and had to become familiar with various aspects of patent law of these countries.

An interesting experience I had as an international law practitioner was visiting Spain to study European Patent law.  During my law school years, I participated in an intellectual property seminar ran by CASRIP, a center within the University of Washington School of Law, in Alicante, Spain.  The seminar was a great opportunity to network with European lawyers and law students, to learn substantive European patent law, and to explore Spain.

In practicing international law, something interesting I learned about another country’s legal system/culture was that attorneys in other countries tend to be multilingual and also tend to be more formal in their correspondence than U.S. attorneys.

This is the best advice I have been given: plan ahead.

I would share this with new lawyers: finding a good mentor is really important for your success.

The best part of my job is learning about new, constantly-evolving technologies.  Being a patent attorney is about constant learning and understanding each invention that I work on.  I enjoy seeing and learning about new inventions that people working at the cutting edge of innovation have come up with.

If I could change one thing about the law, I would clarify the definition of patentable subject matter.

During my free time, I enjoy spending time in the outdoors: hiking in the summer, snow-shoeing and cross-country skiing in the winter, and trying to involve my fiancée in all of these activities.  I also enjoy reading, with science fiction and fantasy being the preferred genres.

The most memorable trip I ever took was a three-weeks-long backpacking trip through Europe after I graduated with my Bachelor’s degree.  The trip happened to coincide with the World Cup taking place in Germany, and the crazy energy of the soccer fans made the trip even more memorable in so many ways.

I absolutely can’t live without chocolate and potatoes (not together).

I am participating in my first triathlon in the second weekend of August.

My favorite place in the world is Deception Pass State Park.

I am happiest when I am with my family.

Nobody would ever suspect that I speak four languages with varying degrees of fluency.  I lived in Kazan, Russia, until I was about 14, and in addition to my native Russian, I also learned a fair amount of Tatar language while there.  While in high school, I also studied Spanish, learning enough not to get lost in Spain ten years later.

Friends would describe me as loyal, dependable, and fun.

This is on my bucket list: hiking in Alaska.

If I could pick a superpower, it would be flight.

If I could get free tickets to any event, I would go to the Super Bowl.

My all-time favorite book is The Lord of the Rings.



Internationally Minded” is the IPS member profile page of the Global Gavel.  We share our members’ unique and international stories with the readers of the Global Gavel.