CFDB and the Kagan Binder Team Join Forces
Two experienced intellectual property teams are coming together to provide greater depth, broader capabilities, and increased capacity—without sacrificing the direct relationships and practical counsel clients value.
Christensen Fonder Dardi Busse PLLC is pleased to announce that attorneys and intellectual property professionals from Kagan Binder are joining CFDB, bringing together two respected Minnesota-based IP teams.
Working as one firm, our expanded team adds complementary experience across a broad range of technologies and intellectual property matters. Clients will have access to greater technical breadth, additional capacity for sophisticated and fast-moving work, and an experienced team capable of supporting everything from a focused project to a complex global portfolio.
Just as important, this growth preserves the qualities that earned both teams long-standing client relationships: direct access to experienced professionals, responsive communication, practical advice, and efficient representation aligned with each client’s business objectives.
With offices in Oakdale and Maple Grove, Minnesota, CFDB offers the experience and capabilities of a larger IP practice with the personal accountability and accessibility of a focused firm. We are excited to welcome our new colleagues and to continue earning our clients’ trust as we build this next chapter together.
Remembering David Kagan
As we begin this new chapter, we also mourn the recent passing of our friend and colleague David Kagan. David co-founded Kagan Binder with Mark Binder and helped build it into a deeply respected intellectual property practice.
David was instrumental in bringing our teams together. Although he did not live to see the combination completed, his vision helped make it possible. We are grateful for his friendship, leadership, and lasting contributions to his clients, colleagues, and the intellectual property profession. His legacy will remain an important part of the firm we are building together.
Patent And Intellectual Property Attorneys With The Knowledge And Experience To Help You
With diverse backgrounds in science and engineering, our attorneys have obtained and protected thousands of patents for clients. Our firm leverages our deep understanding of the legal and technical aspects of intellectual property to add value to each case we work on.
DUE DILIGENCE INVESTIGATIONS
We ensure your creation isn’t protected by existing patents
INTELLECTUAL PROPERTY LITIGATION
When it’s necessary to go to court to protect your IP
PATENT OPINIONS
Patent opinions help ensure the commercial success of your idea or concept
PATENT PREPARATION & PROSECUTION
Ensuring your application meets filing requirements
Worldwide Service Out Of Our Offices In the Minneapolis – st. paul metropolitan region
Our World-Recognized Patent And IP Attorneys Lead The Industry
Whether you are a Fortune 500 company, an emerging and fast-growing business, or a startup with a great idea, we help protect your innovation.
- We work with clients all over the world.
- We manage patent and trademark portfolios, monitoring the web to spot infringers.
- We help clients license their IP to third parties.
MEET OUR ATTORNEYS & PATENT AGENTS
Doug Christensen
Partner, Patent Attorney
John Fonder
Partner, Patent Attorney
Peter Dardi
Partner, Patent Attorney

Tim Busse
Partner, Patent Attorney

Mark Binder
Partner, Patent Attorney

Dale A. Bjorkman
Partner, Patent Attorney

Scott Berger
Partner, Patent Attorney

Lori P. Sarageno, PhD
Partner, Patent Attorney

Scott Piering
Partner, Patent Attorney

Andrew Auderieth
Intellectual Property Attorney

Dianne Bennett
Patent Agent

Elizabeth A. Gallo
Patent Agent

Alison Sachs
Patent Attorney

Aeriel Parker
Attorney

Michaele Hakamaki
Patent Attorney
Paul W. Busse
Counsel, Patent Attorney
Protecting Your
Most Precious Assets
Our attorneys know how valuable intellectual property and trademarks are. We take our responsibility to safeguard your ideas and trade secrets seriously – our attorneys work hard to produce results that will benefit you for years to come. We are also ready to vigorously litigate on your behalf should another company or individual infringe on your IPs.



