AeroLeads people directory · profile

John Vandenberg Email & Phone Number

Senior Counsel at Klarquist Sparkman, LLP
Location: Portland, Oregon, United States 3 work roles 2 schools
2 work emails found @klarquist.com 4 phones found area 503 LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails · 4 phones

Work email j****@klarquist.com
Direct phone (503) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Senior Counsel
Location
Portland, Oregon, United States
Company size

Who is John Vandenberg? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

John Vandenberg is listed as Senior Counsel at Klarquist Sparkman, LLP, a with 143 employees, based in Portland, Oregon, United States. AeroLeads shows a work email signal at klarquist.com, phone signal with area code 503, and a matched LinkedIn profile for John Vandenberg.

John Vandenberg previously worked as Partner at Klarquist Sparkman, Llp and Associate at Kenyon & Kenyon. John Vandenberg holds Jd from New York University School Of Law.

Company email context

Email format at Klarquist Sparkman, LLP

This section adds company-level context without repeating John Vandenberg's masked contact details.

{first}.{last}@klarquist.com
92% confidence

AeroLeads found 2 current-domain work email signals for John Vandenberg. Compare company email patterns before reaching out.

Profile bio

About John Vandenberg

Patent litigator, and vegan. For 40 years, Mr. Vandenberg has been litigating patents around the country for technology clients including Microsoft, SAP, Dexcom, Nautilus, ETAP, and Mentor Graphics/Siemens.SUPREME COURT AND COURTS OF APPEALS: Mr. Vandenberg has argued more than a dozen appeals before the Court of Appeals for the Federal Circuit. He successfully argued before the Supreme Court of the United States in Nautilus, Inc. v. Biosig Instruments, Inc., No. 13-369, for rejection of the Federal Circuit’s “insolubly ambiguous” and “amenable to construction” test for enforcing the Patent Act’s mandate that patent claims “particularly point[] out and distinctly claim[]” the patent’s invention.COURT TRIALS: Mr. Vandenberg has first-chair tried patent infringement suits, and copyright infringement suits, and trademark infringement suits, and product-configuration trade dress suits.PTAB TRIALS: Mr. Vandenberg has been lead counsel in Patent Office trial proceedings.PATENT-LAW TRAINING AND ADVOCACY: Since 2004, Mr. Vandenberg has been the primary editor of an extensive summary of substantive defenses and related strategies in patent infringement suits, posted at www.patentdefenses.com. He speaks throughout the nation on patent law, district-court patent litigation, PTAB patent trials, and patent appellate practice. He emphasizes untraditional approaches to successfully defending against a patent infringement suit while improving the law and patent system in the process. To the same end, he has authored many Amici briefs in the U.S. Supreme Court and the Federal Circuit on behalf of scores of technology companies and associations. He testified before a U.S. Senate IP Subcommittee on patent-eligibility and Sec. 112(f).PATENT ARBITRATOR: Mr. Vandenberg is available to arbitrate patent disputes.

Listed skills include Patent Litigation, Intellectual Property, Patents, Trade Secrets, and 3 others.

Current workplace

John Vandenberg's current company

Company context helps verify the profile and gives searchers a useful next step.

Klarquist Sparkman, LLP
Klarquist Sparkman, Llp
Senior Counsel
Portland, OR, US
Website
Employees
143
AeroLeads page
3 roles · 45 years

John Vandenberg work experience

A career timeline built from the work history available for this profile.

Partner

Current

Patent litigation. Mostly software and e-commerce.Portland, OR office.

Mar 1989 - Present
Team & coworkers

Colleagues at Klarquist Sparkman, LLP

Other employees you can reach at klarquist.com. View company contacts for 143 employees →

2 education records

John Vandenberg education

FAQ

Frequently asked questions about John Vandenberg

Quick answers generated from the profile data available on this page.

What company does John Vandenberg work for?

John Vandenberg works for Klarquist Sparkman, LLP.

What is John Vandenberg's role at Klarquist Sparkman, LLP?

John Vandenberg is listed as Senior Counsel at Klarquist Sparkman, LLP.

What is John Vandenberg's email address?

AeroLeads has found 2 work email signals at @klarquist.com for John Vandenberg at Klarquist Sparkman, LLP.

What is John Vandenberg's phone number?

AeroLeads has found 4 phone signal(s) with area code 503 for John Vandenberg at Klarquist Sparkman, LLP.

Where is John Vandenberg based?

John Vandenberg is based in Portland, Oregon, United States while working with Klarquist Sparkman, LLP.

What companies has John Vandenberg worked for?

John Vandenberg has worked for Klarquist Sparkman, Llp and Kenyon & Kenyon.

Who are John Vandenberg's colleagues at Klarquist Sparkman, LLP?

John Vandenberg's colleagues at Klarquist Sparkman, LLP include Kristina Bushey, Gillian Gardner, Stacey Slater, Susan Alpert Siegel, and Gregory Maurer.

How can I contact John Vandenberg?

You can use AeroLeads to view verified contact signals for John Vandenberg at Klarquist Sparkman, LLP, including work email, phone, and LinkedIn data when available.

What schools did John Vandenberg attend?

John Vandenberg holds Jd from New York University School Of Law.

What skills is John Vandenberg known for?

John Vandenberg is listed with skills including Patent Litigation, Intellectual Property, Patents, Trade Secrets, Software Patents, Patent Portfolio Analysis, and Litigation.

Find 750M verified contacts

Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.

People with similar names

Check these profiles if this is not the John Vandenberg you were looking for.

View similar profiles