David Hamlin Madden

David Hamlin Madden

also known as Dave Madden

5.0
Rating: 9.5

Licensed for 22 years

Intellectual property Lawyer at Tigard, OR
Practice Areas: Intellectual Property, Business

9600 S.W. Oak Street, Suite 500, Tigard, OR

About David

Biography

Practice Areas

2

Practice Areas

Intellectual Property 66%

Patent prosecution, infringement analysis, freedom-to-operate work, and design around engineering.

22 years

66%
Business 34%

Start-up consulting and integrated strategy planning.

19 years

34%

Fees and Rates

Cost

Free Consultation

$0 first 30 minutes

Hourly Rates

$ 225-325 per hour


Payment Methods

  • Cash
  • Check

Looking for an attorney? Avvo can help.

search module image

Search our directory

Quickly connect with top attorneys through our legal directory to get help with your legal issue.

chat module image

Avvo's live chat agents can help coordinate a consultation with a local attorney.

Chat with a live agent who can match you with the right attorney for your legal needs.

Chat with

Licenses

Licensed in Oregon for 18 years

State: Oregon

Acquired: 2008

Active

No misconduct found

Licensed in Utah for 7 years

State: Utah

Acquired: 2019

Administrative - Not authorized to practice

No misconduct found

Licensed in California for 22 years

State: California

Acquired: 2003

Not Eligible to Practice Law (Not Entitled)

No misconduct found

Location

Mersenne Law LLP

9600 S.W. Oak Street, Suite 500, Tigard, OR, 97223

Ad

Transform legal challenges into solutions.

Connect now to review your situation.

The Avvo Rating explained

display-bg

The Avvo Rating explained

David Hamlin Madden's Reviews

Avvo Review Score

5.0 /5.0

2 Client Reviews

Filter Avvo Reviews (2) Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.
Star rating
5 stars 2
4 stars 0
3 stars 0
2 stars 0
1 star 0
Practice Areas
What Clients Mention

Showing 1 - 1 of 1 review | Practice Area Knowledge

Posted by Evan Yemel | December 28, 2009 | Trademark Application

very helpful, polite, and knowledgeable!

I had an issue with a trademark search, and Mr. Madden really helped me out by explaining the situation very clearly. Thanks again David.

See All Client Reviews

David Hamlin Madden's Lawyer Endorsements

Endorse David
Michael O Stevens headshot
Michael Stevens

Intellectual property lawyer | Nov 07

Relationship: Worked together on matter

"I endorse this lawyer."

Joseph Abraham Bahgat headshot
Joseph Bahgat

Intellectual property lawyer | Oct 10

Relationship: Worked together on matter

"Dave is a terrific guy, and one of the most competent attorneys I've had the pleasure of working with. Dave's knowledge of substantive copyright law is excellent, but what sets him apart is how well versed he is in the tendencies and temperaments of the judges in his district. Good lawyers stay on top of all of their own cases, but great lawyers go beyond that, aspiring to stay on top of all the cases that have the potential to affect their entire practices. Dave is a great lawyer."

Hovanes Margarian headshot
Hovanes Margarian

Unknown lawyer | Nov 05

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Matthew A. Kane headshot
Matthew Kane

Intellectual property lawyer | Dec 12

Relationship: Other

"I endorse this lawyer's work. He is a savvy fellow with a quick wit and a sharp tongue. He will make it simple for you, which is all you can ask of a lawyer."

Steven Alan Fink headshot
Steven Fink

Intellectual property lawyer | Dec 10

Relationship: Fellow lawyer in community

"I endorse this lawyer's work. In addition to providing brilliant legal analysis, Mr. Madden also boasts a wicked sense of humor that he incorporates into his responses."

Scott Arlon Waite headshot
Scott Waite

Patent application lawyer | Dec 02

Relationship: Worked together on matter

"I endorse this lawyer's work."

View All Endorsements
Farzad Rastegar headshot
Farzad Rastegar

Discrimination lawyer

Ralph Edward Gzik headshot
Ralph Gzik

Copyright infringement lawyer

Benjamin C Stoller headshot
Benjamin Stoller

Business lawyer

Jose R Mata headshot
Jose Mata

Patent application lawyer

Steven Alan Fink headshot
Steven Fink

General practice lawyer

Scott Arlon Waite headshot
Scott Waite

Intellectual property lawyer

Experience

Rating:  9.5 (Superb)

Honors

2003

Remedies, Computer Assisted Legal Education

Work Experience

2009 - Present

Patent Attorney, Mersenne Law LLC

2004 - 2007

Associate, Blakely, Sokoloff, Taylor & Zafman

Associations

2009 - Present

Multnomah Bar Association

Member

2009 - Present

Oregon State Bar, Solo & Small Firms Section

Board Member

Sample of Legal Cases

Adaptive entropy coding compression output formats

Patent U.S.7,605,721 Granted

See More Legal Cases

Education

2003

Southwestern School of Law

JD

1985

Johns Hopkins University

BS - Bachelor of Science

Speaking Engagements

2010

OTBC Lunch Talk

Bad Patent!

Languages

Japanese

Activity

Avvo Rating

Our Rating is calculated using information the lawyer has included on their profile in addition to the information we collect from state bar associations and other organizations that license legal professionals. Attorneys who claim their profiles and provide Avvo with more information tend to have a higher rating than those who do not.

What determines Avvo Rating?
  • Experience & background Years licensed, work experience, education
  • Legal community recognition Peer endorsements, associations, awards
  • Legal thought leadership Publications, speaking engagements
  • Discipline Disciplinary information may not be comprehensive, or updated. We recommend that you always check a lawyer's disciplinary status with their respective state bar association before hiring them.
Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution