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Timothy Edward Siegel

Patent application Attorney at Bellevue, WA

5.0   14 reviews
  • State Years
    Washington - WA 15 years
    Oregon - OR 28 years
    California - CA 29 years
  • Licensed for 15 years
    State WA
    Acquired 2007
    Active No misconduct found
  • Licensed for 28 years
    State OR
    Acquired 1995
    Active No misconduct found
  • Licensed for 29 years
    State CA
    Acquired 1993
    Not Eligible to Practice Law (Not Entitled) No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Timothy

Learn Timothy’s areas of practice.

Practice areas
  1. Patent application
    I am experienced in protecting inventions in the electrical, mechanical, optical and software fields

    30 years, 250 cases

  2. Trademark application

  3. Patent infringement

Very sorry, but I am not currently accepting new clients.

Contact Timothy

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Timothy Edward Siegel
777 108th Ave Ne
Ste 2240
Bellevue, WA, 98004-5178


5.0 / 5.0
  14 customer reviews
5 Star
4 Star
3 Star
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1 Star
Posted by Bernard | February 27, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Amazing Patent Attorney
Timothy has an amazing grasp of the patent process ,he guided me with ease through the process. His professionalism and knowledge is outstanding .
Posted by anonymous | June 18, 2018
This review is from a person who hired this attorney.
| Hired Attorney
I am very happy with the results.
I appreciate the help that Mr. Siegel and his firm has been giving me towards processing my intellectual properties. He has been instrumental on educating me for proper approach to avoid wasting money in this process. I am very happy with the results.
Posted by Richard | April 4, 2018
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Patent and trademark applications
Our small company has worked with Tim for over ten years. He has helped us get three patents, three trademarks, as well as other IP legal advise. He has been an outstanding asset for us.
Posted by Geoffrey | January 26, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Torrefire Stoves
Mr. Siegel provided excellent patent strategies, with concise, knowledgeable incite. He was always available when called upon. I highly recommend his services.
Posted by Joe | August 17, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Medical Device
I have worked with medical device patent attorneys for 30 years. I have hired Tim to work on two-three patents over the past five years. He did great work! Both were allowed quickly. He was able to understand my ideas and rapidly turn them into patents!
Posted by Xiaodi | May 25, 2017
This review is from a person who hired this attorney.
| Hired Attorney
A great patent attorney
I hired Tim for three patent applications in the past several years and satisfied very much with his jobs. He gave me good advise during the patent application writing and fought with examiners skillfully. My three applications have been granted with patents including a difficult one won through appeal. He charged reasonably and worked with high efficiency in my cases. I hired several patent attorneys in my carrier so far and rank him the best one.
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Posted by Clint | November 30, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Extremely knowledgeable, professional, and great communication.
I contacted Timothy about a concern I had related to some ongoing patent litigation in another state. I was not involved I that litigation, but I needed some professional guidance in understanding what was happening in the courts. Timothy is professional, quick, and a great communicator. When it comes to services like doctors and lawyers, you want to know you are working with the best available. Timothy has exceeded my expectations, and I have no hesitation in recommending him to friends or family.
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Posted by Andy | July 10, 2015
Effective preparation and prosecution of patent application
Our experience with Tim Siegel in the prosecution of the Company patents has been an excellent one. He is an experienced attorney that I have known for over 15 years, and who has filed four patents for us to this point. He easily understands the technical aspects of each patent, conducts thorough search of relevant prior IP, and completes the filings, and any USPTO responses in a timely manner. At a time when the USPTO has tightened the criteria for issuance of new patents we have not had any rejections. He is experienced in filing in foreign patent offices on a worldwide basis. He has deep knowledge of patent law and is able to communicate in simple terms the implications of any issues that may arise. Having worked with a number of other attorneys I can also state that his fees are reasonable. Overall I would highly recommend Tim to any seeking a competent patent attorney.
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Posted by anonymous | December 15, 2012
Knowledgable, versatile and dedicated!
Tim has helped me through at least 5 different patent applications, including one memorable round-the-clock international marathon to meet a priority deadline - with more than 70 claims! He has been a trusted patent attorney and adviser to me for more than 8 years.
Posted by Steve | September 28, 2010
Outstanding Patent Attorney
As a deadline was looming I contacted Tim Siegel to continue a patent application started by another attorney who became seriously ill. I was relieved when he agreed to meet with me later that afternoon. At the first meeting I was sold -- his enthusiasm and knowledge exceeded my expectations. The patent describes a rather technical method and within the first 10 minutes of my description Tim was already completing my sentences. No one previously had grasped it so quickly. We made the deadline and now it's a waiting game. Regardless of how it turns out, I feel the application is a much stronger one after Tim's modifications. Another thing -- his fees are very reasonable and he is most generous with his time. Tim may shoot me for saying this -- in my previous dealings with patent lawyers they charged me for every phone call and email (in 15 minute blocks) even when they initiated the contact and my response was a simple 'yes' or 'no'. Tim doesn't operate that way. At our first meeting he described his fee structure based on how long he thought it would take -- and then that was it. I more than got my money's worth. I would definitely recommend using Tim Siegel -- I will again, too.
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Posted by Scott | October 11, 2009
I asked Tim Siegel to finish a patent application that I had begun with another attorney. He spent a good deal of time with me in conversation to learn about my invention and its distinctive features. After writing an excellent response to the USPTO's office action, he then persuaded the patent examiner to accept unique features of my invention that were initially rejected. I believe that his insight, on-target suggestions and excellent work resulted in a much stronger patent than I would have otherwise received . I am very pleased with the work he has done for me and I plan to work with him again.
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Posted by anonymous | January 31, 2009
A terrific patent attorney
Timothy has successfully prosecuted a first patent on my behalf and has prepared and filed a further two applications. He has guided me throughout the entire process and has always been very quick to respond to my questions and concerns. His enthusiasm in understanding an invention is comforting and his application drafting skills are exemplary. His patent prosecution skills are excellent. I have found Timothy to be an extremely knowledgeable attorney. If you phone or email Timothy with a question, you can expect to receive a shrewd answer, without receiving a direct charge for his advice. His fees have always been very reasonable and I have always been at ease with Timothy as my patent Attorney. I have recommended Timothy to fellow inventors in the past and will not hesitate to recommend him in the future.
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Posted by anonymous | January 29, 2009
Great patent attorney
Mr. Siegel successfully completed my patent applications and responded to the resulting office actions. He assisted with my cases even after moving and transferring the cases to a local attorney. I most appreciated that he spent a lot of time with me, learning and discussing my inventions, exploring and expanding them. In the end it paid off with patents issued, trademarks issued, service marks issued. He's very "user friendly" and I always felt as if he had my interests firmly in mind.
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Posted by anonymous | December 4, 2008
A Smart Patent Attorney
Timothy Siegal is an extraordinarily well-informed lawyer. He is also quite methodical and precise in crafting patent applications, and a good writer to boot. We had some issues with the patent office concerning one application, and although it was ultimately denied, Timothy did a great job of communicating the problems back to me. I would not hesitate to use him again, if ever I have another original idea.
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  • Hourly Rates $ 400-400 per hour
Payment methods
Cash, Check


AVVO RATING 10.0 (Superb)

Work Experience

  • Owner
  • Timothy E. Siegel Patent Law
  • 1999 - Present
  • Associate Attorney
  • Chernoff Vilhauer McClung & Stenzel
  • 1997 - 1999
  • Associate Attorney
  • Stoel Rives
  • 1995 - 1997
  • Associate Attorney
  • Arant Kleinber Lerner & Ram
  • 1993 - 1995
View all work experience


  • Loyola Law School, Loyola Marymount University
  • JD - Juris Doctor
  • 1993
  • University of Southern California
  • MA - Masters
  • 1986
  • Wayne State University
  • BS - Bachelor of Science
  • 1981


  • Washington State Bar Association, Solo and Small Firm Section
  • Executive Committee
  • 2009 - Present
  • King County Bar Association
  • Member
  • 2008 - Present
  • East King County Bar Association
  • Member
  • 2008 - Present
  • Oregon State Bar, Computer and Internet Law Section Executive Committee
  • Chairman
  • 2006 - 2007
  • Oregon State Bar, Computer and Internet Law Section
  • Executive Committee
  • 1998 - 2007
View all associations

Languages Spoken

  • English

Honors and Awards

  • BV Rated
  • Martindale-Hubbell
  • 2011
  • National Merit Scholar Finalist
  • National Merit Scholarship
  • 1974


Speaking Engagements

  • Lunchtime Presentation Series
  • Patenting Computer Programs
  • 2003
  • Lunchtime Presentation Series
  • Legal Protection of Software
  • 2000

Attorney endorsements

Received (7)
Given (8)
Endorse Timothy
Patent application Attorney | Apr 18
Relationship: Worked together on matter
"Tim Siegal makes patent applications and analysis approachable for his clients and other attorneys as well. Tim is responsive, detailed, and thorough. I have greatly enjoyed working with him."
Patent application Attorney | Mar 14
Relationship: Fellow lawyer in community
"Tim Siegel is a master of his craft."
Trademark application Attorney | Oct 29
Relationship: Worked together on matter
"I very much appreciate the expertise that you bring to your practice. Always enjoy working with you."
Patent application Attorney | Oct 29
Relationship: Worked for lawyer
"I endorse this lawyer. He has great depth of knowledge and experience in patent law. He is diligent and responsive to clients and provides strategic counsel as well as practical expertise."
Patent application Attorney | Nov 19
Relationship: Worked together on matter
"I endorse this lawyer. Tim is an integral resource for helping build a strong IP portfolio. He is a skilled patent practitioner and provides prompt, conscientious and comprehensive legal representation."
Patent application Attorney | Aug 02
Relationship: Worked together on matter
"I endorse this lawyer's work. Provided excellent practical advise regarding scope and enforceability of several patents."
Patent application Attorney | Feb 04
Relationship: Fellow lawyer in community
"Exerienced, friendly, talented lawyer."
View more endorsements
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Bellevue Patent application Lawyer Timothy Edward Siegel
Timothy Edward Siegel
Patent application Attorney
Bellevue, WA
Licensed for 29 years