Protecting IP. Propelling Business.

Banner Witcoff is the trusted partner of choice for protecting and enforcing intellectual property, completely.

Learn More

Highlights

WTR 1000 Names Banner Witcoff and Four Attorneys Among World’s Leading Trademark Professionals

Anna King and Design Patent Practice Recognized at Managing IP Americas Awards

PTAB Litigation.

Banner Witcoff is successful on behalf of petitioners at the Patent Trial and Appeal Board, representing them in hundreds of proceedings.

IPR institution rate

15% above the average institution rate

invalidating some or all claims

4% above the average of patents going to final decision and having some or all claims invalidated

News + Events

January 22, 2026 – Banner Witcoff announces the election of five new shareholders, effective immediately. The new shareholders span the firm’s Chicago and Washington, D.C. offices, devoted to protecting their clients’ intellectual

By Grace Beach, Zach Getzelman, and Victoria Webb In a landmark copyright law decision, the U.S. Supreme Court unanimously reversed a $1 billion jury verdict and shielded internet service provider

The World Intellectual Property Review (WIPR) has recognized Banner Witcoff shareholder Robert Katz, along with the firm’s patent practice, in its 2025 edition of the USA Patents. The national rankings highlight

Fourteen Banner Witcoff attorneys have been selected for inclusion on the 2026 Illinois Super Lawyers and Rising Stars lists for their intellectual property practice. 2026 Illinois Super Lawyers Joseph Berghammer

We are pleased to announce that John P. Iwanicki has been recognized in the Boston Elite — Life Sciences: Regulatory rankings of The Legal 500 United States. In the 2026

View more posts

What industry are you interested in?

What practice area are you interested in?

Education and networking.

For IP attorneys working as in-house counsel, our Corporate IP Roundtables events provide valuable educational and networking opportunities.

Get in touch.

71 South Wacker Drive / Suite 3600
Chicago, IL 60606

Main: 312.463.5000 / Fax: 312.463.5001

1100 13th Street NW / Suite 1200
Washington, DC 20005

Main: 202.824.3000 / Fax: 202.824.3001

28 State Street / Suite 1800
Boston, MA 02109

Main: 617.720.9600 / Fax: 617.720.9601

111 SW 5th Street / Suite 3150
Portland, OR 97204

Main: 202.824.3000

Cookie	Description
AWSELB	This cookie is associated with Amazon Web Services and is used for managing sticky sessions across production servers.
JSESSIONID	Used by sites written in JSP. General-purpose platform session cookies that are used to maintain users' state across page requests.
viewed_cookie_policy	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.

Cookie	Description
_ga	This cookie is installed by Google Analytics. The cookie is used to calculate visitors, session, campaign data and keep track of site usage for the site's analytics report. The cookies store information anonymously and assigns a randomly generated number to identify unique visitors.
_gid	This cookie is installed by Google Analytics. The cookie is used to store information on how visitors use a website and helps in creating an analytics report of how the website is doing. The data collected including the number visitors, the source where they have come from, and the pages visited in an anonymous form.

Protecting IP. Propelling Business.

Highlights

PTAB Litigation.

News + Events

Banner Witcoff Elects Five New Shareholders in Chicago and D.C. Offices

IP Alert | The Supreme Court Clarifies Intent is the Touchstone for Contributory Copyright Liability

WIPR’s USA Patents 2025 Recognizes Robert Katz and Patent Practice

2026 Illinois Super Lawyers and Rising Stars Features 14 Banner Witcoff Attorneys

John Iwanicki Recognized in The Legal 500 Life Sciences: Regulatory (Boston Elite)

Search our library.

Education and networking.

Get in touch.

Protecting IP. Propelling Business.

PTAB Litigation.

IP Alert | The Supreme Court Clarifies Intent is the Touchstone for Contributory Copyright Liability

WIPR’s USA Patents 2025 Recognizes Robert Katz and Patent Practice

2026 Illinois Super Lawyers and Rising Stars Features 14 Banner Witcoff Attorneys

John Iwanicki Recognized in The Legal 500 Life Sciences: Regulatory (Boston Elite)

Education and networking.

Chicago

Washington D.C.

Boston

Portland