Corey Johanningmeier


Corey specializes in complex intellectual property litigation and has both brought and defended such cases on behalf of startups, individuals, and Fortune 500 companies.  He has served as actual or de facto lead counsel, driving strategy from complaint through successful resolution.  And he has often stepped in to manage technical or other aspects of ongoing cases.  In particular, he has substantial experience working with, presenting, and cross-examining engineer and expert witnesses.  A trial lawyer at heart and in practice, Corey relishes the challenge of understanding innovative business models and technologies well enough not only to teach them, but to present them in a compelling way that can win a verdict or judgment from lay jurors or judges.

Prior to joining Bunsow De Mory, Corey gained over a decade of experience trying, litigating, and resolving high-stakes intellectual property cases at Keker, Van Nest & Peters and at Jones Day.  He developed a long record of successes defeating patent assertions at trial, in pre-trial dispositive motions, or through patent office proceedings.  Since changing his practice to focus on patent assertion, he has had equivalent success resolving cases and defeating the same kind of motions and proceedings he used to win for defendants.  Corey enjoys representing inventors, universities, and patent owners against large-scale infringers, for the same reasons he preferred defending start-ups in fights with big established companies at his former firm.

Corey has pursued career experiences that deepen and diversify his understanding of how judges and juries approach and decide issues.  He served as a law clerk to the Honorable David F. Hamilton of the U.S. Court of Appeals for the Seventh Circuit, for whom he had previously worked as an extern on the district court.  In addition to his trial experiences in Delaware, Eastern Texas, and at arbitration, Corey has tried three misdemeanor cases to jury verdict as a volunteer Deputy District Attorney in Los Angeles.  And he has represented indigent clients pro bono in civil, family, traffic, eviction, and immigration courts, and in the U.S. Court of Appeals.

Corey had a previous career in electrical and computer engineering, working as a chip designer and a technical marketing engineer on mixed-signal and very-large-scale integrated circuits—for disk drives, optical routers, network processors, and other applications.  In his free time, he takes road trips, reads towards achieving polymathy, and tries to be a good Dad.

Awards & Recognition

  • Super Lawyers Rising Stars, 2016-2017; Super Lawyers, 2021
  • Representation of DIRECTV, Inc. recognized in The Daily Journal’s “Top Verdicts of 2010
  • Managing IP Star, 2022

Presentations & Publications

  • “The 7 Virtues of the Design-Around,” Legaltech News, 2016
  • Presented as “IP Practitioner-in-Residence,” Center for Intellectual Property Research, IU Maurer School of Law, October 2016
  • Note published as “Law & Politics, The Case Against Judicial Review of Direct Democracy,” 82 Indiana Law Journal 1125


  • Indiana University, Maurer School of Law, J.D.; magna cum laude; Order of the Coif; Articles Editor, Indiana Law Journal; Extern to the Hon. David F. Hamilton, U.S. District Court for the Southern District of Indiana
  • University of Southern California, B.S., Electrical Engineering

Bar Admissions

  • California

Court Admissions

  • U.S. Court of Appeals, 7th Circuit
  • U.S. Court of Appeals, 9th Circuit
  • U.S. Court of Appeals, Federal Circuit
  • U.S. District Court, Northern District of California
  • U.S. District Court, Central District of California
  • U.S. District Court, Eastern District of California
  • U.S. District Court, Eastern District of Texas

Theta IP, LLC v. Samsung Electronics Co., Ltd.

BDIP successfully asserted core mobile phone battery savings patents invented by world-renowned Columbia Professor Yannis Tsividis against Samsung in the Western District of Texas.  After defeating the dozen-plus dispositive motions that Samsung filed throughout the case and in pretrial proceedings, BDIP achieved a very favorable resolution on what was to be the first day of trial, as the jury was en route to the courthouse for jury selection.

Vineyard Investigations v. E. & J. Gallo Winery

Representing soil scientist, viticulturalist, and inventor Dr. Paul Skinner in enforcement of a patent portfolio related to intelligent control of irrigation and chemical delivery in vineyards and fields.  Prevailed in initial phases of litigation against Gallo, including defeating a patent ineligibility motion and successfully opposing institution of inter partes review.


Ramot at Tel Aviv University, Ltd. v. Cisco Systems, Inc.

Brought and led ongoing litigation enforcing a portfolio of high-speed optical communications patents on behalf of Ramot and its Tel Aviv University researchers.  Defeated institution of inter partes review and successfully defended Federal Circuit appeals from that result.


Lambeth Magnetic Structures v. Western Digital

Representing LMS and Prof. David Lambeth in enforcement of a magnetic material structure patent directed to fundamental improvements in data storage density.  Defeated summary judgment motions leading to mediation and favorable settlement with Western Digital.  Claims against Seagate Technologies are set for trial in the Western District of Pennsylvania.


Founders and Shareholders v. Technology Company 

Recovered tens of millions on behalf of sellers of acquired sensor technology, in a contractual indemnity action that was tried to an arbitrator and concerned settled patent and trade secret litigation.


Symantec Corp. v. Zscaler, Inc

Defended cloud network security startup Zscaler in a fourteen-patent litigation in the Northern District of California. Argued for and secured dismissal of two patents as invalid for subject matter ineligibility.


CA, Inc. d/b/a CA Technologies v. New Relic, Inc

Argued for and obtained summary judgment of non-infringement on behalf of application performance management startup New Relic, leading to dismissal of competitor litigation in the Eastern District of New York.


Comcast Cable Communications, LLC et al. v. BT Americas et al. 

On behalf of Comcast, asserted multiple networking technology patents against BT in the Northern District of Texas.  Obtained a favorable settlement.


Suffolk Technologies LLC v. AOL Inc. and Google Inc

Represented defendants in advertising technology patent litigation in the Eastern District of Virginia. Obtained summary judgment of invalidity as to most claims and exclusion of plaintiff’s damages expert report on the eve of trial, which were upheld on appeal after stipulated dismissal of the one remaining claim.


DIRECTV, Inc. v. Confidential Indemnitor 

Successfully represented DIRECTV in all aspects of a breach of contract arbitration that was tried to a three-judge panel and concerned indemnity for patent infringement claims.  Won an award and completely defeated counterclaims that were together worth more than $75 million dollars.



Successfully defended DIRECTV in multiple patent infringement actions involving various aspects of direct broadcast satellite television technology, interactive program guides, and set-top box functionalities.


EMC Corporation v. Pure Storage Inc.

Represented data storage innovator Pure Storage in a five-patent lawsuit and trial in the District of Delaware.  Defeated two patent assertions before trial, obtained jury verdicts of non-infringement as to two others as well as a verdict of zero lost profits, and won partial judgment as a matter of law and a new trial on invalidity as to the last patent, prior to a favorable global settlement.


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