Patent Litigation Expert Witness
Dr. Tal Lavian provides expert witness services in patent litigation, with specialized expertise in patent infringement analysis, claim construction, prior art evaluation, and USPTO post-grant proceedings. With 120+ issued patents, 35+ years of technical experience, a PhD from UC Berkeley, and courtroom testimony in US District Court and the USPTO, Dr. Lavian brings both technical credibility and litigation experience to patent disputes.
Patent Infringement Analysis
Claim Mapping & Infringement Opinions
Expert analysis of whether accused products or methods literally infringe patent claims or meet claims under the doctrine of equivalents. Detailed technical comparison of claim limitations to accused products.
- Literal Infringement Analysis: Detailed element-by-element comparison of patent claims to accused products, identifying which claims elements are met
- Doctrine of Equivalents: Analysis of whether non-literal variations perform substantially the same function in substantially the same way to achieve the same result
- Claim Interpretation: Application of appropriate claim language interpretation to determine claim scope
- Product Analysis: Comprehensive reverse engineering and technical analysis of accused products
- Detailed Report Preparation: Expert reports suitable for court, including detailed technical analysis and clear claim mapping
- Deposition Testimony: Credible expert testimony on infringement analysis and claim interpretation
Claim Construction & Interpretation
Markman Hearing Support & Claim Analysis
Expert support for claim construction disputes, including analysis of claim language, specification support, prosecution history, and prior art definitions of claim terms.
- Specification Analysis: Detailed review of patent specification to identify claim term meanings, antecedent basis, and intended scope
- Prosecution History: Analysis of patent prosecution file to identify applicant intent and any statements about claim scope
- Prior Art Definitions: Research of prior art documents to establish how claim terms were understood in the relevant art
- Technical Knowledge: Applying technical expertise to explain how claim terms would be understood by those skilled in the art
- Doctrine of Claim Differentiation: Analysis of claim distinctions to determine intended scope differences
- Expert Declaration Support: Preparation of Markman declarations and expert testimony on claim construction
Prior Art Analysis & Invalidity Assessment
Prior Art Research & Obviousness Analysis
Comprehensive prior art research to identify references that anticipate or render claims obvious. Assessment of patent validity and patentability under 35 U.S.C. § 102 and § 103.
- Prior Art Search: Systematic search for patents, publications, products, and other public disclosures relevant to claimed invention
- Anticipation Analysis: Assessment of whether single prior art references fully disclose all claim elements (§ 102)
- Obviousness Analysis: Evaluation of whether claimed invention would be obvious to those skilled in the art (§ 103)
- Secondary Considerations: Evidence of commercial success, industry praise, and licensing that may support non-obviousness
- Motivation to Combine: Analysis of whether there would be motivation to combine multiple prior art references
- Objective Indicia: Assessment of evidence supporting or undermining patent validity and non-obviousness
Freedom to Operate Analysis
- Patent Landscape Analysis: Comprehensive review of patents that might impact product development or commercialization
- Design-Around Analysis: Technical assessment of whether products can be modified to avoid patent claims
- Risk Assessment: Evaluation of freedom to operate risks and implications
- Comparative Claim Analysis: Detailed comparison of potentially blocking patents and differences from accused products
USPTO Proceedings & Post-Grant Review
Inter Partes Review (IPR) & Post-Grant Proceedings
Expert support for USPTO proceedings including Inter Partes Review (IPR), Covered Business Method (CBM) Review, and Post-Grant Review (PGR) proceedings.
- IPR Petitions: Support for filing and defending against Inter Partes Review petitions at the Patent Trial and Appeal Board
- CBM Proceedings: Expertise in Covered Business Method reviews for business method patents
- PGR Proceedings: Analysis and support for Post-Grant Review proceedings filed within 9 months of patent grant
- Reissue & Reexamination: Knowledge of other USPTO patent proceedings including reissue and reexamination
- Expert Declarations: Preparation of expert declarations for USPTO proceedings with appropriate technical analysis
- PTAB Testimony: Expert testimony before the Patent Trial and Appeal Board
Patent Portfolio Experience
120+ Issued Patents
Dr. Lavian's extensive patent portfolio demonstrates deep understanding of patentable subject matter, claim drafting, patent prosecution, and technology innovation across multiple domains.
- Patent Portfolio: 120+ issued patents covering telecommunications, networking, VoIP, security, and related technologies
- Claim Drafting Experience: Extensive experience in patent claim drafting and claim limitation strategies
- Patent Prosecution: 35+ years of patent prosecution experience including interaction with USPTO examiners
- Patentable Subject Matter: Deep understanding of what constitutes patentable subject matter in technology fields
- Prior Art Navigation: Experience dealing with prior art in patent prosecution and patent prosecution history
- Technical Innovation: Demonstrated understanding of innovative technologies suitable for patent protection
Courtroom Experience & Expert Testimony
- US District Court Testimony: Experience testifying as an expert witness in patent infringement cases in federal district court
- USPTO Proceedings: Expert testimony before the Patent Trial and Appeal Board in post-grant proceedings
- ITC Proceedings: Experience with International Trade Commission patent proceedings
- Deposition Testimony: Extensive deposition experience with clear, credible testimony
- Clear Communication: Ability to explain complex patent concepts and technical details clearly to judges, juries, and attorneys
- Expert Reports: Detailed, well-organized expert reports suitable for court proceedings
Frequently Asked Questions
What patent litigation expertise does Dr. Lavian provide?
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Dr. Lavian provides expert analysis on patent infringement, claim construction, prior art evaluation, freedom to operate analysis, and USPTO proceedings including Inter Partes Review (IPR), Covered Business Method (CBM), and Post-Grant Review (PGR). His 120+ patents provide deep practical understanding.
What is claim construction in patent litigation?
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Claim construction (Markman hearing) determines the meaning of patent claim terms. Dr. Lavian has extensive experience in claim construction disputes, understanding how claim language relates to technical implementation and prior art.
How does Dr. Lavian analyze patent infringement?
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Dr. Lavian analyzes whether accused products or systems meet each element of a patent claim. He provides detailed technical analysis comparing patent claims to accused products, including literal infringement and doctrine of equivalents analysis.
What is prior art analysis?
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Prior art analysis examines whether a patent's claimed invention was known before the patent filing date. Dr. Lavian evaluates patents, publications, products, and other public disclosures to identify relevant prior art.
How can patent expertise support my litigation?
Patent expert testimony supports district court litigation, ITC cases, and USPTO proceedings. Dr. Lavian provides claim construction analysis, infringement opinions, validity analysis, and damages analysis in patent disputes.
Need Patent Litigation Expert Testimony?
Contact Dr. Tal Lavian to discuss how his patent expertise and litigation experience can support your case.
Contact Dr. Lavian