"Calfee, Halter & Griswold is a top-notch firm for patent litigation."
Calfee client, as reported by Best Lawyers in the “Best Law Firms” report
Calfee’s Patent Litigation practice includes a bench of patent attorneys with deep experience in all aspects of patent litigation, including discovery, claim construction, summary judgment, trial, and appeals to the Court of Appeals for the Federal Circuit. Calfee’s patent litigators are involved in offensive and defensive client representations in a wide range of technologies including the mechanical, electrical, software, and chemical arts.
Calfee has one of the largest and most accomplished intellectual property dispute teams in the Midwest. Serving a broad spectrum of publicly and privately held companies, our patent litigation lawyers represent plaintiffs and defendants with respect to patents, copyrights, trade secrets trademarks, trade dress, product configurations, unfair competition, and licensing claims. Our patent litigation attorneys focus on all major scientific disciplines including mechanical and electrical engineering, chemistry, biotechnology, computer hardware, software and circuit design, and semiconductors.
The Calfee team consists of experienced first-chair litigators who have handled matters before all manner of federal and state courts, the U.S. Patent and Trademark Office, the U.S. Customs Office, the International Trade Commission, and the Federal Trade Commission.
Calfee combines diligence and attention to detail with a sensitivity to our clients’ economic and strategic goals in working to resolve complex intellectual property disputes – matching the demands of each case with the firm’s resources both efficiently and effectively.
In addition, Calfee’s team includes former law clerks and patent examiners who bring unique insight and experience to disputes that are legally and technically complex.
This focus on efficient dispute resolution puts Calfee at the forefront of the IPR practice since those proceedings were first created in 2012. In the last three years alone, Calfee patent litigation lawyers have been involved with more than 20 IPRs, in cases ranging from medical devices and communication equipment to consumer products and packaging. This experience, combined with a favorable, Ohio-based cost structure, has allowed our clients to succeed in patent disputes faster and less expensively than in traditional litigation.
The litigators in our Intellectual Property group have gained extensive and valuable intellectual property litigation experience dating back to the 1980s when the group was formed. At any given day, Calfee has a dozen or more attorneys in the group devoting all or substantially all of their time to intellectual property litigation. Calfee’s IP litigators also are supported by and can draw upon the sophisticated case management technology and personnel of Calfee’s extensive general litigation practice if needed.
In addition, our firm has extensive experience in providing opinions and “design around” advice to assist our clients in penetrating new markets and creating new product lines. Virtually every day, Calfee attorneys prepare opinions or provide advice with respect to avoiding patent conflicts while achieving the business goals of entering new markets. As with every aspect of our practice, we take into account a client’s goals and comfort level with respect to any particular product.
Our intellectual property litigators have represented clients in trial courts in many of the 50 states and have briefed and argued cases to the Court of Appeals for the Federal Circuit and other appellate courts. These litigators have successfully represented clients in trademark, trade dress, or unfair competition cases involving a wide range of consumer and industrial products and services. Many of these matters were for clients whose patent or trademark portfolio also is maintained by Calfee.
Additionally, understanding that intellectual property litigation can be very expensive, Calfee often will explore alternatives to one-size-fits-all, “full-blown” litigation, such as alternate dispute resolution, creative staffing, and parallel negotiation/litigation.
In addition to litigation, we offer other patent dispute-oriented services including the following:
Calfee’s patent practice is regularly called on to provide a spectrum of opinions, including defensive opinions such as non-infringement and invalidity opinions. Calfee also is called upon to provide Rule 11 analyses and opinions regarding third-party competitors' infringement of our clients' patents.
Calfee is routinely asked to provide second opinions of other firms' patent opinions.
Our opinion work is centered around potential new product launches in mechanical, chemical, or electrical/software arts. In this regard, Calfee has developed various strategies for searching and analyzing a wide range of patent landscapes to meet available client budgets.
We employ a two-attorney review of all opinions to ensure that all reasonable positions have been considered. One of the two attorneys is typically an experienced patent litigator who brings a litigation perspective to the opinion process.
Calfee’s opinions have taken a wide range of forms, including formal written work product (ranging from being more summary to extremely detailed in nature), graphical (e.g., PowerPoint) presentations, and combinations of the foregoing.
Along with opinions, Calfee’s patent practice is routinely called upon to provide counseling on a wide range of matters, including competitive patent portfolio analyses and threats, design-around, non-infringement, invalidity positions, as well as due diligence for patent-related mergers and acquisitions.
For new business ventures or new product designs, our patent practice has significant experience analyzing competitor patent portfolios and counseling business unit leaders on associated risks and design-around alternatives. Calfee’s patent practice is relied upon daily by many Fortune 1000 companies.
Since 2004, Calfee has been recognized as a Leading Law Firm for Intellectual Property by Chambers USA, most recently in Band 1 in Ohio (2024).
Clients provided feedback to Chambers USA researchers, "Calfee is esteemed for its handling of IP litigation and portfolio management on behalf of large clients in Ohio and the Midwest and across the USA. The IP team is highly experienced in the engineering, chemical, and biological sectors, with notable abilities in handling matters for consumer products and manufacturing clients. The team is responsive, practical, and extremely knowledgeable."
Clients interviewed by Chambers USA said, "The firm offers excellent value for its services. The team is dedicated and provides sophisticated IP legal services at an attractive cost. Calfee's IP attorneys are highly regarded; they are true experts, and they do excellent work for their clients. This is a power bench; the team works well together and supports each other well. Each individual is responsive and knowledgeable in their expertise and experience. This is definitely one of my favorite firms to work with."
Chambers USA researchers also found Calfee's IP team to be held in "very high regard by fellow practitioners who note Calfee's extensive experience representing clients in wider patent and trademark matters, IP litigation matters, appellate work, and advising companies on managing IP assets in China."
Calfee was selected for inclusion in the 2024 "Best Law Firms" rankings in the following areas:
Calfee was selected for inclusion by Benchmark Litigation 2025 as a Highly Recommended Law Firm in Dispute Resolution in Ohio. Additionally, 16 of Calfee's Litigation partners have been ranked by Benchmark Litigation as "Litigation Stars" in the U.S. (National), Midwest, and Ohio and as “40 & Under" and "Future Stars" Honorees.
Whether a case demands trial and appeal or a well-negotiated settlement, our top priority is finding the right path to defend our clients and achieve their goals in the most economical and efficient way possible.
Calfee understands that a “win” does not simply mean victory in the courtroom; it also means achieving the financial goals that make the time and expense of litigation worthwhile. A sample of our successes includes the following:
Our attorneys have prosecuted and defended litigation involving subjects as:
"Calfee, Halter & Griswold is a top-notch firm for patent litigation."
Calfee client, as reported by Best Lawyers in the “Best Law Firms” report