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Practice × location ranking

Best Patents law firms in Chicago

Grouped into editorial tiers — words, never scores. No paid placement and no numeric rank; within a tier the order rotates monthly and carries no meaning.

Last verified 22 Jul 2026 · Next review by 22 Aug 2026 · Change log

Direct answer & research summary

Best Patents law firms in Chicago are tiered by Sartori & Partners from public footprint as of July 2026, not from a numeric score: 10 firms sit on this board. Sartori & Partners has completed 400+ placements since 2017 (230+ in-house), including 52 general counsel and chief legal officer searches, with a median of 11 weeks from brief to accepted offer. A NASDAQ-listed medtech in Boston accepted its successor general counsel in week 11, from a shortlist of four at day 24.

01 — The ranking

The Chicago Patents board

This board maps the best Patents law firms in Chicago into worded tiers as of July 2026. Each band is an editorial judgement of Patents standing in Chicago; within a tier no firm outranks another, and monthly order is a locator, not a league table.

CHICAGO × PATENTS10 FIRMS · NO SCORESREV. 2026-07
REFFIRMCHICAGO PATENTS BANDSIGNAL
TIER 1 — MARKET LEADERS3 FIRMS

Market leaders on this board are the firms that anchor high-stakes patent prosecution, enforcement and portfolio strategy in Chicago. Placement is a worded judgement, never a numeric rank.

T1·01 K&L Gates10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T1·02 Morgan Lewis10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T1·03 Quarles & Brady10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
TIER 2 — HIGHLY ACTIVE4 FIRMS

Firms here maintain a clear, busy Patents profile in Chicago. The label is editorial; within-tier order rotates and carries no hierarchy.

T2·01 Nixon Peabody10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T2·02 Banner & Witcoff25–49 attorneys mapped · major local depth 25–49 ATTORNEYS FLAT → EVID ↓
T2·03 Husch Blackwell10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T2·04 Michael Best & Friedrich10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
TIER 3 — ESTABLISHED3 FIRMS

Established firms have a verified, durable Patents footprint in Chicago, assessed at full tier depth. They sit below the more active bands by editorial judgement, not by score.

T3·01 Barnes & Thornburg10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T3·02 Foley & Lardner10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓
T3·03 Neal Gerber & Eisenberg10–24 attorneys mapped · major local depth 10–24 ATTORNEYS FLAT → EVID ↓

All counts are shown as bands, never precise headcounts. Notable firms sit outside the tiers by design: verified minimal presence, not assessed at full tier depth.

Hiring in Chicago?

We map this market every day.

The evidence behind these tiers is the same intelligence we use to run retained searches for partners, groups and senior associates.

02 — Evidence, methodology & sources why each firm · how tiers are set · sources · change log · verified 22 Jul 2026 · next review 22 Aug 2026

Firm evidence

Tier 1 — Market leaders Open firm profile →

K&L Gates

K&L Gates is placed in market leaders for Patents in Chicago. Public mapping (banded): 10–24 attorneys, major local depth, ≈5 partners · <5 counsel · 10+ associates. Evidence gates — office (G1) PASS, local practice (G2) PASS, recent signal (G3) PASS. The placement carries no numeric score.

Strongest mapped work

Intellectual PropertyLitigation & DisputesAntitrust & Competition

Public hiring signal

Hiring signal: FLAT — no public hiring change detected in the mapping window.

Limits of this assessment

  • —A tier is Sartori’s editorial opinion, not a fact about the firm or a client-satisfaction measure.
  • —Facts are mapped from public sources and shown as bands; they lag reality by weeks or months.
  • —No third-party legal-directory band is used as an input.

Sources for this entry

Methodology

How tiers are assigned

Deterministic public-footprint core (local depth, practice share, seniority mix, public hiring momentum), computed relative to this market's own distribution. Tier placement is derived from this public mapped data; a per-firm public-source ledger is compiled for firms in the annual research pass and applies to those firms' factual claims, not to tier membership. No third-party legal-directory bands are used as an input.

Market scope

10–24 firms earn a tier in Chicago within this scope (banded).

Disclosures

Firm names used nominatively (factual). All counts shown as bands, never precise headcounts. No firm logos. Report an error via the site contact form.

Sources & change log

  1. 1 Chicago | Places | K&L Gatesfirm_website · G1 · 2026-07-21
  2. 2 Chicago | Places | K&L Gatesfirm_website · G2 · 2026-07-21
  3. 3 K&L Gates Advises SoniVie in its Acquisition by Boston Scientific for US$600 Millionfirm_website · G3 · 2026-07-21
  4. 4 2025 Asset Management and Investment Funds Fall Conference—Chicago | HUB | K&L Gatesfirm_website · G3 · 2026-07-21
  5. 5 Locations: Quarles Law Firm, Attorneys, Lawyersfirm_website · G1 · 2026-07-21
  6. 6 Quarles & Brady — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  7. 7 Quarles & Brady — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  8. 8 Office Locations | Nixon Peabody LLPfirm_website · G1 · 2026-07-21
  9. 9 Nixon Peabody — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  10. 10 Nixon Peabody — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  11. 11 Locations - Banner Witcofffirm_website · G1 · 2026-07-22
  12. 12 Home - Banner Witcofffirm_website · G1 · 2026-07-22
  13. 13 Banner & Witcoff — attorney bios & practice pagesfirm_website · G2 · 2026-07-22
  14. 14 Banner & Witcoff — Chicago news & announcementsfirm_website · G3 · 2026-07-22
  15. 15 Locations | Husch Blackwellfirm_website · G1 · 2026-07-21
  16. 16 Chicago Attorneys | Law Firm in Chicago | Husch Blackwellfirm_website · G1 · 2026-07-21
  17. 17 Husch Blackwell — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  18. 18 Husch Blackwell — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  19. 19 Offices | Michael Best & Friedrich LLPfirm_website · G1 · 2026-07-21
  20. 20 Michael Best & Friedrich — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  21. 21 Michael Best & Friedrich — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  22. 22 Locations | Barnes & Thornburgfirm_website · G1 · 2026-07-21
  23. 23 Chicago Business Law Firm | Barnes & Thornburgfirm_website · G1 · 2026-07-21
  24. 24 Chicago Business Law Firm | Barnes & Thornburgfirm_website · G2 · 2026-07-21
  25. 25 Barnes & Thornburg — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  26. 26 Offices | Foley & Lardner LLPfirm_website · G1 · 2026-07-21
  27. 27 Foley & Lardner — attorney bios & practice pagesfirm_website · G2 · 2026-07-21
  28. 28 Foley & Lardner — Chicago news & announcementsfirm_website · G3 · 2026-07-21
  29. 29 Our Office | Neal, Gerber & Eisenberg LLPfirm_website · G1 · 2026-07-22
  30. 30 Our Story | Neal, Gerber & Eisenberg LLPfirm_website · G2 · 2026-07-22
  31. 31 Client Services | Neal, Gerber & Eisenberg LLPfirm_website · G2 · 2026-07-22
  32. 32 Neal Gerber Eisenberg to Move to Chicago Landmark Building in 2025 | Neal, Gerber & Eisenberg LLPfirm_website · G3 · 2026-07-22
  33. 33 Neal Gerber Eisenberg Achieves LEED Platinum Certification for New Office at The Bell | Neal, Gerber & Eisenberg LLPfirm_website · G3 · 2026-07-22
22 Jul 2026 Scope-aware market-relative core assembled.
22 Jul 2026 33 verified source(s) ingested for the researched firms; tier placement comes from our own market data so unresearched visible firms do not block approval → APPROVED (auto).
Report an error in this ranking →

04 — Questions

About this ranking

Who are the best Patents law firms in Chicago?

As of July 2026, K&L Gates, Morgan Lewis, Quarles & Brady occupy Tier 1 — Market leaders — on Sartori's Chicago Patents board. That band is an editorial judgement of patent-mandate depth, seniority mix and market standing; full placement of all 10 visible firms is on this page.

Is K&L Gates the best Patents law firm in Chicago?

K&L Gates sits in Tier 1 — Market leaders — of Sartori's Chicago Patents board as of July 2026, alongside Morgan Lewis, Quarles & Brady. Sartori does not name a single #1: the gap between Tier 1 firms is genuinely unmeasurable, and a numeric score would be false precision.

Which firms have the biggest Patents benches in Chicago?

By mapped Chicago bench, the largest firms on this board are Banner & Witcoff (25–49 mapped lawyers each), followed by K&L Gates, Morgan Lewis, Quarles & Brady, Nixon Peabody, Husch Blackwell, Michael Best & Friedrich, Barnes & Thornburg, Foley & Lardner, Neal Gerber & Eisenberg (10–24). All counts are bands, never precise headcounts.

Which Patents teams are hiring in Chicago?

As of July 2026, no firm on this board shows a public hiring signal in the mapping window. Live Chicago mandates are listed on Sartori's jobs board.

What is a Tier 1 law firm?

In Sartori's rankings, Tier 1 — Market leaders — is an editorial judgement expressed in words, never a score: the firms whose Chicago bench depth, seniority mix and market standing set the reference point for the market. As of July 2026 that is K&L Gates, Morgan Lewis, Quarles & Brady. Within the tier no firm outranks another.

Which are the best law firms in Chicago overall?

Sartori's overall Chicago board groups 25 firms into editorial tiers; as of July 2026 its Tier 1 is Jenner & Block, Katten Muchin Rosenman, Kirkland & Ellis, Mayer Brown, Sidley Austin, Winston & Strawn, DLA Piper. See /firms/in/chicago/.

See the ranking →

This ranking is compiled independently by Sartori from public sources. Tiers are Sartori’s editorial opinion, expressed without numeric scores; firms are named for identification only, no logos are reproduced, and no firm has paid for or approved its placement. No third-party legal-directory band is used as an input. Nothing here is legal advice or a recommendation to instruct counsel.