Fee petition mechanics · Updated June 2026
Antitrust attorney fee petition mechanics: DOJ Antitrust Division CID investigation and HSR pre-merger advisory, FRCP 23 class certification and Comcast Corp. v. Behrend classwide damages model advisory, and Clayton Act § 15 mandatory "shall recover" treble damages and California Cartwright Act § 16750(a) fee advisory
Antitrust solos billing hourly on Sherman Act § 1/§ 2 and Clayton Act § 15 private plaintiffs' matters — whose fee documentation must cover advisory calls triggered by the DOJ Antitrust Division Civil Investigative Demand (CID) issuance calendar in the DOJ's internal case management records (not PACER), the court's FRCP 16(b) scheduling order and FRCP 23 class certification briefing calendar, and the post-judgment Clayton Act § 15 mandatory "shall recover" treble damages and attorney fee calendar entirely outside counsel's control — generate three billing gaps: DOJ Antitrust Division CID investigation and FTC HSR pre-merger second request advisory calls arriving when the DOJ or FTC issues a CID in its internal administrative records before any complaint is filed (5 clients × 2 calls × 44 min × 55% untracked ≈ 4.03 hrs = $1,210–$2,017/year at $300–$500/hr), FRCP 23 class certification analysis and Comcast Corp. v. Behrend classwide damages model advisory calls arriving when the court's scheduling order sets the class certification briefing deadline and the damages model must be consistent with a single certified theory of antitrust liability (5 clients × 3 calls × 48 min × 55% untracked ≈ 6.60 hrs = $1,980–$3,300/year), and Clayton Act § 15(a) mandatory "shall recover" treble damages and California Cartwright Act § 16750(a) attorney fee advisory calls arriving when the judgment triggers the mandatory fee award requiring bifurcated federal/California lodestar documentation — federal § 15(a) (no Ketchum multiplier under City of Burlington v. Dague) and California § 16750(a) (Ketchum multiplier eligible) (4 clients × 2 calls × 48 min × 55% untracked ≈ 3.52 hrs = $1,056–$1,760/year). For a solo antitrust practice handling private Sherman Act and Clayton Act plaintiffs' matters, the annual billing gap from advisory call underlogging is $4,245–$7,075.
TL;DR
ClaimHour captures every DOJ/FTC CID advisory call that arrives when the DOJ or FTC issues a civil investigative demand in its internal administrative records outside PACER, every FRCP 23 class certification and Comcast damages model advisory call that arrives when the court's scheduling order sets the class certification briefing deadline and the theory-matched damages model must be completed, and every Clayton Act § 15(a) mandatory "shall recover" fee petition advisory call that arrives when the judgment triggers the mandatory bifurcated federal/California lodestar documentation — passively, no timer, no audio, no call contents. $29–$59/mo. No PMS required.
DOJ Antitrust Division CID investigation and HSR pre-merger advisory: calls on the civil investigative demand calendar
The DOJ Antitrust Division's Civil Investigative Demand (CID) — issued under 15 U.S.C. § 1312 and administered through the DOJ Antitrust Division's internal case management and docketing system, not PACER — is the primary non-PACER Welch temporal anchor for antitrust billing documentation in Sherman Act and Clayton Act private litigation. The CID issuance date precedes any court filing in a DOJ antitrust investigation and establishes when private plaintiffs' counsel's advisory calls regarding the antitrust violation become billable — because DOJ investigations frequently precede private litigation and their existence is established through client notification, DOJ press releases, and discovery in subsequent private litigation. The FTC similarly issues CIDs under 15 U.S.C. § 57b-1, administered through the FTC's Matter Management System (MMS) — an internal FTC administrative database separate from PACER. For HSR-reportable mergers, the FTC or DOJ Bureau of Competition issues a "second request" — which functions as a CID extending the HSR waiting period — administered through the agency's internal merger review scheduling calendar.
Two DOJ/FTC CID advisory call types that arrive on the civil investigative demand calendar: (1) DOJ CID receipt and Sherman Act § 1 horizontal conspiracy analysis advisory — arrives when the DOJ issues a CID to the client and the § 1 horizontal restraint analysis must be completed (requiring Sherman Act § 1 per se violation analysis for horizontal price-fixing (Socony-Vacuum Oil Co., 310 U.S. 150 (1940) per se unlawful; United States v. Apple Inc., 791 F.3d 290 (2d Cir. 2015) hub-and-spoke price-fixing per se analysis); horizontal market allocation (Topco Associates, 405 U.S. 596 (1972) per se unlawful); bid rigging (Addyston Pipe & Steel, 175 U.S. 211 (1899)); Leegin Creative Leather Products, Inc. v. PSKS, Inc., 551 U.S. 877 (2007) minimum resale price maintenance under rule of reason; Continental T.V., Inc. v. GTE Sylvania Inc., 433 U.S. 36 (1977) vertical nonprice restraints under rule of reason; and Sherman Act § 2 monopolization — Grinnell Corp., 384 U.S. 563 (1966): monopoly power in a relevant market plus willful acquisition or maintenance — 44–52 min); (2) FTC HSR second request and pre-merger notification compliance advisory — arrives when an HSR-reportable transaction receives a second request extending the waiting period (requiring HSR Act § 18a 2026 notification thresholds: $119.5M size-of-transaction, $23.9M size-of-person; FTC second request 'substantial compliance' certification — parties must certify substantial compliance with the document/data demands before the additional waiting period expires; Clayton Act § 7 'substantially lessen competition or tend to create a monopoly' standard; Ohio v. American Express Co., 138 S.Ct. 2274 (2018) two-sided transaction platform market definition — requires net-effect analysis across both market sides; and Illinois Brick Co. v. Illinois, 431 U.S. 720 (1977) direct purchaser standing for private antitrust damages — 44–52 min). At 55% untracked: 5 clients × 2 calls × 44 min × 55% = 242 min / 60 = 4.03 hours = $1,210–$2,017/year at $300–$500/hr.
FRCP 23 class certification and Comcast classwide damages model advisory: calls on the district court scheduling order calendar
The district court's FRCP 16(b) scheduling order — issued by the court on its own case management timeline in CM/ECF (PACER) — sets the class certification briefing schedule and expert disclosure deadlines that generate advisory calls outside counsel's control in private antitrust litigation. In Comcast Corp. v. Behrend, 569 U.S. 27 (2013), the Supreme Court held that a plaintiff seeking FRCP 23(b)(3) class certification must demonstrate through the class certification record — not merely the pleadings or proposed class-wide proof — that damages are susceptible of measurement across the entire class in a manner that is consistent with the certified theory of antitrust liability. A damages model that measures harm from theories of anticompetitive conduct not certified for class treatment cannot satisfy the Comcast requirement, creating theory-specific advisory calls at each class certification briefing stage.
Three FRCP 23 class certification and Comcast damages model advisory call types that arrive on the scheduling order calendar: (1) FRCP 23(a)/(b)(3) class certification analysis and antitrust injury advisory — arrives when the scheduling order sets the class certification motion deadline (requiring FRCP 23(a) four prerequisites: numerosity (too many class members for joinder), commonality (common questions of law or fact), typicality (named plaintiffs' claims typical of class), adequacy (named plaintiffs adequate representatives); FRCP 23(b)(3) predominance — in antitrust cases, common questions including common proof of impact on all class members must predominate; Illinois Brick direct purchaser standing; CAFA 28 U.S.C. § 1332(d) federal jurisdiction for class actions exceeding $5M; and Hanover Shoe no passing-on defense against direct purchasers — 48–56 min); (2) Comcast classwide damages model and antitrust impact expert advisory — arrives when the scheduling order sets the expert disclosure deadline concurrent with class certification briefing (requiring Comcast Corp. v. Behrend damages model consistency analysis — the damages model must exclude harm attributable to non-certified theories of anticompetitive conduct; In re Hydrogen Peroxide Antitrust Litigation, 552 F.3d 305 (3d Cir. 2008) rigorous Daubert analysis at certification stage — district court must perform full Daubert review, not mere plausibility check; Bazemore v. Friday, 478 U.S. 385 (1986) regression analysis admissibility; Tyson Foods, Inc. v. Bouaphakeo, 577 U.S. 442 (2016) classwide statistical sampling when just and reasonable inference; and Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579 (1993) reliability factors for econometric impact models — 48–56 min); (3) CAFA § 1715 notice compliance and FRCP 23(e) class settlement approval advisory — arrives when the class settlement is negotiated and the § 1715 mandatory notice period begins (requiring CAFA § 1715(b) mandatory 10-day pre-filing notice to federal and state officials before the proposed class settlement is filed — failure triggers § 1715(d) 90-day additional opt-out right for unnamed class members; FRCP 23(e)(2) fair, reasonable, and adequate standards; In re Bluetooth Headset Products Liability Litigation, 654 F.3d 935 (9th Cir. 2011) three warning signs of collusive settlement (reversion clause, disproportionate attorney fees in settlement amount, clear-sailing agreement on fees); and Hensley lodestar from DOJ CID issuance date through settlement approval — 48–56 min). At 55% untracked: 5 clients × 3 calls × 48 min × 55% = 396 min / 60 = 6.60 hours = $1,980–$3,300/year at $300–$500/hr.
Clayton Act § 15 mandatory "shall recover" treble damages and Cartwright Act § 16750(a) fee advisory: calls on the post-judgment calendar
Under Clayton Act 15 U.S.C. § 15(a), any person injured in business or property by reason of anything forbidden in the antitrust laws "shall recover" threefold the damages sustained plus the cost of suit including a reasonable attorney's fee. The Clayton Act § 15(a) mandatory "shall recover" standard is the strongest federal civil fee-shifting provision in the fee-petition-mechanics series: no Octane Fitness exceptionality showing is required, no Fogerty discretionary analysis is required, no § 1021.5 three-factor public interest analysis is required — the court must award attorney fees to any prevailing private antitrust plaintiff. California is a repealer state under Illinois Brick — the California Cartwright Act Business and Professions Code § 16750(a) allows indirect purchasers to recover treble damages plus attorney fees, creating a separate California fee petition that, unlike the federal § 15(a) component, is eligible for the Ketchum positive multiplier because it is governed by California law rather than federal City of Burlington v. Dague.
Three Clayton Act § 15 and Cartwright Act § 16750(a) post-judgment advisory call types: (1) § 15(a) treble damages calculation and Cartwright Act § 16750(a) indirect purchaser recovery advisory — arrives when the verdict or summary judgment is entered for the plaintiff (requiring § 15(a) mandatory treble damages — the court multiplies actual damages by three without judicial discretion; Illinois Brick direct purchaser standing verification for the federal claim; California Cartwright Act § 16750(a) indirect purchaser treble damages claim for California indirect purchasers; ARC America Corp. v. Idaho, 490 U.S. 93 (1989) state indirect purchaser statutes not preempted by Illinois Brick — California Cartwright Act creates an independent state-law right; and Hanover Shoe no passing-on defense against direct purchasers — 48–56 min); (2) Clayton Act § 15(a) mandatory "shall recover" attorney fee petition and Hensley lodestar advisory — arrives when the § 15(a) fee petition is filed after judgment (requiring Hensley v. Eckerhart, 461 U.S. 424 (1983) lodestar documentation from DOJ CID issuance date through judgment; § 15(a) mandatory 'shall recover' standard — no equitable discretion, no prevailing-party balancing, no exceptionality requirement; City of Burlington v. Dague, 505 U.S. 557 (1992) no contingency multiplier for federal Clayton Act § 15(a) fees despite the mandatory nature of the award; and PLCM Group, Inc. v. Drexler, 22 Cal.4th 1084 (2000) California prevailing market rate for the California Cartwright Act § 16750(a) fee component — 48–56 min); (3) Cartwright Act § 16750(a) Ketchum multiplier advisory and bifurcated federal/California lodestar reconstruction — arrives when the California indirect purchaser component of the fee petition is separately analyzed (requiring bifurcated lodestar: federal Clayton Act § 15(a) lodestar (mandatory fee, no Ketchum multiplier under City of Burlington v. Dague) and California Cartwright Act § 16750(a) lodestar (mandatory "the court shall award" fee, Ketchum positive multiplier eligible because California law applies — contingency risk enhancement, novelty and difficulty of questions, exceptional skill); Ketchum v. Moses, 24 Cal.4th 1122 (2001) positive multiplier factors for California § 16750(a) component; and Welch v. Metropolitan Life Insurance Co., 480 F.3d 942 (9th Cir. 2007) three-anchor reconstruction from DOJ CID issuance date, FRCP 16(b) scheduling order date, and § 15(a)/§ 16750(a) judgment date — 48–56 min). At 55% untracked: 4 clients × 2 calls × 48 min × 55% = 211.2 min / 60 = 3.52 hours = $1,056–$1,760/year at $300–$500/hr.
How ClaimHour fits antitrust practice
If you handle antitrust matters as private plaintiffs' counsel on Sherman Act § 1/§ 2 and Clayton Act § 15 claims — with DOJ CID investigation advisory calls arriving when the DOJ issues a civil investigative demand in its internal case management records outside PACER, FRCP 23 class certification and Comcast damages model advisory calls arriving when the court's scheduling order sets the certification briefing deadline and the theory-matched damages model must be completed, and Clayton Act § 15(a) mandatory "shall recover" fee petition advisory calls arriving when the judgment triggers the bifurcated federal/California lodestar documentation (federal § 15(a): no multiplier; California Cartwright Act § 16750(a): Ketchum multiplier available) — and if your fee documentation must satisfy Hensley lodestar specificity from the DOJ CID issuance date, the FRCP 16(b) scheduling order date, and the § 15(a) judgment date, ClaimHour was built for that gap.
Related questions
How do DOJ Antitrust Division CID investigation and HSR pre-merger advisory calls generate billing gaps on the civil investigative demand calendar?
The DOJ Antitrust Division CID issuance date (DOJ internal case management system — non-PACER) and FTC CID/second request issuance date (FTC Matter Management System — non-PACER) are the primary Welch temporal anchors, preceding any court filing. Two call types: DOJ CID receipt and Sherman Act § 1 horizontal conspiracy analysis advisory (44–52 min, arriving when the CID is issued — requires § 1 per se analysis for price-fixing (Socony-Vacuum), market allocation (Topco), and bid rigging (Addyston Pipe); rule-of-reason for vertical restraints (Leegin, Sylvania); and § 2 monopolization (Grinnell)) and FTC second request and HSR pre-merger notification compliance advisory (44–52 min, arriving when the second request extends the HSR waiting period — requires 2026 HSR thresholds, substantial compliance certification, Clayton Act § 7 standard, AmEx two-sided market analysis, and Illinois Brick direct purchaser standing). At 55% untracked: 5 clients × 2 calls × 44 min × 55% ≈ 4.03 hours = $1,210–$2,017/year at $300–$500/hr.
How do FRCP 23 class certification and Comcast classwide damages model advisory calls generate billing gaps on the scheduling order calendar?
The FRCP 16(b) scheduling order sets the class certification and expert disclosure deadlines requiring Comcast theory-matched damages model analysis. Three call types: FRCP 23(a)/(b)(3) class certification and antitrust injury analysis advisory (48–56 min, arriving when the scheduling order sets the certification motion deadline — requires FRCP 23(a) four prerequisites, 23(b)(3) predominance of common questions, Illinois Brick direct purchaser standing, CAFA jurisdiction, and Hanover Shoe no passing-on defense), Comcast classwide damages model and antitrust impact expert advisory (48–56 min, arriving when expert disclosure deadline is set — requires Comcast theory-consistent damages model, In re Hydrogen Peroxide rigorous Daubert at certification, Bazemore regression admissibility, Tyson Foods statistical sampling, and Daubert reliability factors), and CAFA § 1715 notice and FRCP 23(e) settlement approval advisory (48–56 min, arriving when settlement is negotiated — requires § 1715(b) 10-day pre-filing notice, FRCP 23(e)(2) fair/reasonable/adequate standards, Bluetooth Headset collusion indicators, and Hensley lodestar from DOJ CID date). At 55% untracked: 5 clients × 3 calls × 48 min × 55% ≈ 6.60 hours = $1,980–$3,300/year.
How does the DOJ CID issuance date / FRCP 16(b) scheduling order date / § 15 fee award date Welch three-anchor framework apply to antitrust billing documentation?
Three Welch temporal anchors: (1) DOJ Antitrust Division CID issuance date (DOJ internal case management records — non-PACER) — primary anchor; CID precedes any court filing; § 1/§ 2 and HSR advisory calls recoverable from this date under Hensley; (2) FRCP 16(b) scheduling order date (CM/ECF PACER) — secondary anchor; establishes when FRCP 23 class certification and Comcast damages model advisory calls become billable; (3) Clayton Act § 15(a) treble damages and mandatory fee award order date (PACER) — closing anchor; mandatory "shall recover" standard — no Octane Fitness, no Fogerty, no § 1021.5 required; City of Burlington v. Dague no federal multiplier for § 15(a); Cartwright Act § 16750(a) Ketchum multiplier available for California indirect purchaser component. Antitrust is the only practice area in the series governed by the § 15(a) mandatory "shall recover" standard — the strongest federal fee-shifting provision — and requiring bifurcated federal/California lodestar segregation between a no-multiplier federal component and a Ketchum-multiplier-eligible California component.
How does the Clayton Act § 15 mandatory "shall recover" and California Cartwright Act § 16750(a) fee advisory generate billing gaps on the post-judgment calendar?
Clayton Act § 15(a) mandates "shall recover" treble damages plus a reasonable attorney fee — no exceptionality, no discretionary factors, no public-interest analysis. Cartwright Act § 16750(a) allows California indirect purchasers to recover alongside the federal direct-purchaser claim, with Ketchum multiplier available. Three call types: § 15(a) treble damages calculation and Cartwright Act § 16750(a) indirect purchaser recovery advisory (48–56 min, arriving when judgment is entered — requires § 15(a) mandatory trebling, Illinois Brick direct purchaser verification, Cartwright Act § 16750(a) indirect purchaser recovery, and ARC America no preemption), Clayton Act § 15(a) mandatory "shall recover" fee petition and Hensley lodestar advisory (48–56 min, arriving when the fee petition is filed — requires Hensley lodestar from DOJ CID date, "shall recover" mandatory standard without discretionary gatekeeping, and City of Burlington v. Dague no federal multiplier), and Cartwright Act § 16750(a) Ketchum multiplier advisory and bifurcated lodestar reconstruction (48–56 min, arriving when the California component is analyzed — requires bifurcated federal § 15(a) lodestar (no multiplier) and California § 16750(a) lodestar (Ketchum multiplier eligible), PLCM Group California rate, and Welch three-anchor reconstruction). At 55% untracked: 4 clients × 2 calls × 48 min × 55% ≈ 3.52 hours = $1,056–$1,760/year.