Attorney at Law
Patent Bar, CO
School of Law
"Diligent, always accessible! Dan was honest in his representation of himself and his work."
Dan lives in Colorado with his wife of 40 years… read more and enjoys hiking, scuba diving, and photography.
- Design Patent
- Non-Provisional Patent
- Patent Infringement
- Patent Search
- Provisional Patent
- Response to USPTO Office Action (Patent)
- Other Patent Matter
- Copyright Infringement
- Copyright Registration
- Response to USPTO Office Action (Trademark)
- Trademark Infringement
- Trademark Registration
- Trademark Search
- Other Trademark & Copyright Matter
"Great work from Dan once again"
Posted on Oct 6, 2017
"Dan is great! Responsive, but most importantly, he actually listens. I've dealt with attorneys that treated me like an idiot, never truly listening to what I wanted. I know Dan is doing the best FOR ME."
Posted on Sep 22, 2017
"Dan goes above and beyond in helping non legal minds understand things so decision making can be easy and clear to all of us involved. "
Posted on Sep 11, 2017
"Efficient, Smart, Easy to work with, Professional, Fair pricing, Excellent work. Who could ask for anything more? "
Posted on Aug 28, 2017
Posted on Aug 15, 2017
"Thanks Dan for taking care of this. So nice to have you take care of this for us."
Posted on Aug 7, 2017
Shifrin Patent Law
Oct 2005 - Present
Throughout my career, I have worked closely with inventors, engineers, managers, business development personnel, and other IP attorneys. I assist companies of all sizes, as well as individuals. In partnership with my clients, I help move ideas from the invention stage through evaluation and protection towards marketing.
Swanson & Bratschen, LLC
Jan 2002 - Oct 2005
At Swanson & Bratschun, I evaluated invention disclosures; prepared and prosecuted domestic and foreign patent applications, including BPAI appeals, in a wide variety of areas; prepared patentability, infringement and validity studies and opinions; drafted patent and technology licenses and non-disclosure agreements; and prepared and prosecuted trademark applications.
Assistant General Counsel, IP
Nov 1996 - Jan 2002
At Cirrus Logic, I oversaw the intellectual property matters for the Magnetic and Optical Storage Divisions, the Peak Audio Division, the Audio Logic Division, and the Wireless Technology Division. I worked directly with engineer-inventors, managers, and outside patent counsel.
Senior Patent attorney
Jun 1992 - Nov 1996
At IBM, I supervised all intellectual property matters for the Removable Media Storage Solutions business unit. I worked closely with in-house general counsel, business development personnel, managers, engineers, and other IP attorneys at various company locations.