Best Lawyers for Litigation - Patent in California, United States

Search Best Lawyers Now

*This search returned more than the maximum results. Please refine your search using the links above.
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Commercial Litigation Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Menlo Park, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    East Palo Alto, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Commercial Litigation Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Palo Alto, California
  • Practice Areas:
    Communications Law Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    San Francisco, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Redwood City, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
Morgan Chu was awarded 2019 "Lawyer of the Year" in Elasticsearch.PracticeArea

Morgan Chu

Irell & Manella LLP
  • Location:
    Los Angeles, California
  • Practice Areas:
    Information Technology Law Technology Law Bet-the-Company Litigation Patent Law Commercial Litigation Litigation - Intellectual Property Trademark Law Litigation - Patent
Lawyer
  • Location:
    Irvine, California
  • Practice Areas:
    Patent Law Trademark Law Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Litigation - Patent Appellate Practice
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Irvine, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Palo Alto, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Menlo Park, California
  • Practice Areas:
    Litigation - Patent Patent Law Litigation - Intellectual Property Biotechnology and Life Sciences Practice
Lawyer
  • Location:
    Palo Alto, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    San Francisco, California
  • Practice Areas:
    Commercial Litigation Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Irvine, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property Patent Law
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Palo Alto, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Irvine, California
  • Practice Areas:
    Patent Law Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Irvine, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
  • Location:
    San Diego, California
  • Practice Areas:
    Commercial Litigation Litigation - Patent
Lawyer
  • Location:
    Irvine, California
  • Practice Areas:
    Trademark Law Trade Secrets Law Copyright Law Litigation - Intellectual Property Appellate Practice Litigation - Patent Patent Law
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Commercial Litigation Litigation - Patent Bet-the-Company Litigation
Lawyer
  • Location:
    East Palo Alto, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Palo Alto, California
  • Practice Areas:
    Litigation - Intellectual Property Litigation - Patent
Lawyer
  • Location:
    Menlo Park, California
  • Practice Areas:
    Litigation - Patent
Lawyer
  • Location:
    Los Angeles, California
  • Practice Areas:
    Litigation - Patent Litigation - Intellectual Property
Lawyer
Boris Zelkind was awarded  "Lawyer of the Year" in

Boris Zelkind

Duane Morris LLP
  • Location:
    San Diego, California
  • Practice Areas:
    Litigation - Patent Copyright Law

  • Location:
  • Practice Areas:

Practice Area Definition

Litigation - Patent Definition

A patent is a right granted by the federal government to an inventor to exclude others from making, using, or selling the patented invention. Patent litigation typically involves enforcement of the patent owner’s “right to exclude” against an accused infringer. In some cases, a person who feels threatened by a patent owner will file a lawsuit against the patent owner seeking a declaration that the patent is not infringed or that the patent is invalid.

Infringement and validity are the two primary issues at stake in patent litigation and both issues are determined by the “claims” of the patent – short paragraphs which specifically define the limits of patent coverage. The patent owner bears the burden of proving infringement. A patent is infringed if the accused infringer’s product or activities fulfill all elements of at least one claim of the patent. Patents are assumed to be valid, thus the accused infringer bears the burden of proving that the patent is invalid (or unenforceable). A patent is invalid if the invention described in the claims is shown by “prior art” to be neither new nor “unobvious.” Prior art is the entire body of knowledge in the field of the invention existing as of the date of the invention.

An important stage unique to patent litigation is the “claim construction” phase. Since the claims are all-important in patent litigation, the judge is charged with interpreting the claims, putting the often stilted, formalistic claim language into words more understandable to a lay jury. The claims as construed by the judge thereafter govern infringement and validity. Patent owners often seek a broad claim construction so as to cover the accused infringer’s activities. However, a broad construction of the claims make them more susceptible to being found invalid over prior art ferreted out by the accused infringer. Interpretation of the claims can be determinative of the lawsuit, and cases are often settled at this stage.

If the patent is found to be infringed, the owner of an infringed patent is entitled to compensatory damages (no less than a reasonable royalty) and the infringer is often enjoined from further infringing activities. However, by bringing suit the patent owner risks that the patent will be found to be invalid.

Patent litigation is high-stakes, complex litigation and can be quite expensive. According to the 2009 Economic Survey conducted by the American Intellectual Property Law Association, the total cost of a patent lawsuit can range between a median low of $650,000 to a median high of $5.5 million. Use of expert witnesses is very common. Patent litigators, or litigation teams, combine excellent litigation skills and a keen understanding of patent law.

A patent is a right granted by the federal government to an inventor to exclude others from making, using, or selling the patented invention. Patent litigation typically involves enforcement of the patent owner’s “right to exclude” against an accused infringer. In some cases, a person who feels threatened by a patent owner will file a lawsuit against the patent owner seeking a declaration that the patent is not infringed or that the patent is invalid.

Infringement and validity are the two primary issues at stake in patent litigation and both issues are determined by the “claims” of the patent – short paragraphs which specifically define the limits of patent coverage. The patent owner bears the burden of proving infringement. A patent is infringed if the accused infringer’s product or activities fulfill all elements of at least one claim of the patent. Patents are assumed to be valid, thus the accused infringer bears the burden of proving that the patent is invalid (or unenforceable). A patent is invalid if the invention described in the claims is shown by “prior art” to be neither new nor “unobvious.” Prior art is the entire body of knowledge in the field of the invention existing as of the date of the invention.

An important stage unique to patent litigation is the “claim construction” phase. Since the claims are all-important in patent litigation, the judge is charged with interpreting the claims, putting the often stilted, formalistic claim language into words more understandable to a lay jury. The claims as construed by the judge thereafter govern infringement and validity. Patent owners often seek a broad claim construction so as to cover the accused infringer’s activities. However, a broad construction of the claims make them more susceptible to being found invalid over prior art ferreted out by the accused infringer. Interpretation of the claims can be determinative of the lawsuit, and cases are often settled at this stage.

If the patent is found to be infringed, the owner of an infringed patent is entitled to compensatory damages (no less than a reasonable royalty) and the infringer is often enjoined from further infringing activities. However, by bringing suit the patent owner risks that the patent will be found to be invalid.

Patent litigation is high-stakes, complex litigation and can be quite expensive. According to the 2009 Economic Survey conducted by the American Intellectual Property Law Association, the total cost of a patent lawsuit can range between a median low of $650,000 to a median high of $5.5 million. Use of expert witnesses is very common. Patent litigators, or litigation teams, combine excellent litigation skills and a keen understanding of patent law.