William A. Meunier

I'll research this attorney before drafting.

William A. Meunier — patent litigation summary

Focus / technology areas. Meunier's practice centers on patent infringement litigation and post-grant proceedings, with a technology mix weighted toward semiconductors and electronics. His recurrent PTAB work involves 3D-structure memory and DRAM patents (Elm 3DS Innovations; Marlin Semiconductor; Netlist–SK hynix memory-module matters), graphics processing and microprocessor portfolios (ITC Inv. No. 337-TA-984), and foundry/fabrication technology (Innovative Foundry Technologies). Firm bios also list internet services and systems, computer hardware and software, mobile systems, medical devices, biotechnology, mechanical devices and manufacturing, sports equipment, and toys/novelties. There is no evident specialty in Wi-Fi/standard-essential licensing or in Hatch-Waxman/pharma patent litigation.

Side preference. The tracked record is 3 plaintiff-side versus 12 defendant-side appearances, and that understates his patent-owner work: several "defendant" entries are actually representations of the patent owner in PTAB proceedings — Marlin Semiconductor (a Longitude Licensing–affiliated entity) against Unified Patents and TSMC, Innovative Foundry Technologies against SMIC Americas, and Elm 3DS Innovations against SK hynix, Micron, and Samsung. In practice he works both sides of the "v." — defending operating companies in district court and ITC matters while frequently appearing for patent owners and licensing entities in IPRs. His plaintiff-side appearances (including two lead-counsel matters at Mintz) and the ITC investigation where he represented the patent-holder complainant are consistent with that dual posture.

Firm context. Meunier is a Member in the Boston office of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C., where his PTAB work is consistently staffed with Mintz colleagues Michael T. Renaud and Adam S. Rizk. Mintz's announcement of his arrival states he joined as a Member from Goodwin Procter. The case data also lists three appearances in SK hynix Inc. et al. v. Netlist, Inc. under Morrison & Foerster; I was not able to corroborate a Morrison & Foerster tenure in the public bios and firm press materials I reviewed, so that period of his career should be verified independently before it is relied on.

Notable matters and outcomes. Two results recur in firm accounts: (1) representation of Elm 3DS Innovations in 14 IPRs filed by SK hynix, Micron, and Samsung over three-dimensional memory patents, where final written decisions in 13 proceedings confirmed the validity of all but two challenged claims, followed by a precedential Federal Circuit affirmance; and (2) Straight Path IP Group — a complete Federal Circuit reversal and remand of an adverse IPR final written decision against a patent owner, described by Mintz as the first such ruling. He also served as lead attorney defending against seventeen IPRs brought by petitioners including Samsung, Cisco, Avaya, LG, Toshiba, VIZIO, Hulu, and FedEx, and represented the patent-owner complainant in ITC Inv. No. 337-TA-984 (graphics/microprocessor patents against automotive and chip respondents), which resolved favorably before the close of expert discovery in 2016. In the active Marlin Semiconductor matters, PTAB docket aggregators list TSMC's petition in IPR2025-01484 as terminated on discretionary-denial grounds.

PTAB / IPR experience. Post-grant practice is a defining part of his practice rather than an adjunct. Patexia's 2025 PTAB Intelligence Report ranked him 6th-best-performing and 71st-most-active among attorneys representing patent owners, and 7th-best-performing overall; earlier editions ranked him 33rd-best-performing for patent owners and 47th overall. He is a named lead counsel on numerous IPR powers of attorney and writes regularly on IPR practice (institution avoidance, claim amendment, joinder, and Federal Circuit review of PTAB decisions).

Bar and education (sourced). B.S., Mechanical Engineering, Tufts University; J.D., The John Marshall Law School (now UIC School of Law), summa cum laude and first in class. Admitted in Illinois (1996) and Massachusetts (2010); registered to practice before the USPTO (Reg. No. 41,193); admitted to the Federal Circuit, the Seventh Circuit, and several U.S. district courts including D. Mass., E.D. Tex., and N.D. Ill. Recognized in Best Lawyers (Litigation–Patent) since 2021, IAM Patent 1000 (Bronze, Massachusetts patent litigation), and Managing IP's IP Stars as a Massachusetts Patent Star.