Klarquist » 6,613,797

Why Klarquist
People
Careers
News
Services
Protecting Innovation.
Building Brands.
Managing Risk.
ALL SERVICES
Creating & Protecting IP
- PATENTS
  
  Biotech
  
  CS/EE
  
  Physics
  
  Chemical
  
  Mechanical
  
  Plants
  
  Design
- IP COUNSELING
- TRADEMARKS
- COPYRIGHTS
IP Litigation & Disputes
Patent Defenses

6,613,797

Xanthone analogs for treating infectious diseases and complexation of heme and porphyrins

Contact Information

Klarquist Sparkman LLP
One World Trade Center
121 S.W. Salmon Street
Suite 1600
Portland, Oregon 97204

503.595.5300
503.595.5301

Our Services

IP Counseling
Trademark Disputes
Trade Secret Disputes
Copyright Litigation
Other IP Disputes
Patent Litigation
Post Grant
Patents
Trademarks
Copyrights

Contact

If you are interested in reaching the firm regarding legal services, please fill out our form and one of our professionals will contact you.

About us

Klarquist is an intellectual property law firm based in Portland, OR specializing in patent prosecution, trademark and copyright management, and IP litigation. Founded in 1941, Klarquist is one of the oldest and largest full-service IP firms based on the West Coast.

Careers

Our hiring goals are simple: hire the best and keep them happy. Top-caliber professionals practice law at Klarquist because here they can pursue their passion for law and their passion for life. View current openings here.

People

Klarquist’s professional staff of attorneys and patent agents come from diverse backgrounds, and have deep and broad legal and industry experience. View our attorneys and agents here.

©2026 Klarquist Sparkman, LLP. All Rights Reserved.

Privacy Notice Privacy Policy Site Map