Patent Damages Calculation

35 U.S.C. § 284 requires damages 'adequate to compensate for infringement, but in no event less than a reasonable royalty': METHOD 1 — LOST PROFITS: the patentee may recover the profits they would have made on the infringing sales, IF they can show they would have captured those sales absent infringement; PANDUIT CORP. v. STAHLIN BROS. (Fed. Cir. 1978): four-factor test for lost profits: (1) demand for the patented product in the market; (2) absence of acceptable non-infringing substitutes (if a substitute exists, customers might have bought it, not the patentee's product); (3) patentee's manufacturing and marketing capacity to have made the additional sales; (4) the amount of profit the patentee would have made on those sales; ALL FOUR FACTORS REQUIRED: if the infringer can show there was an acceptable non-infringing substitute, lost profits are often unavailable (customers would have bought the substitute, not the patentee's product); LOST PROFITS ARE PREFERRED (HIGHER): lost profits typically produce higher damages than reasonable royalty because they reflect actual profit margins; METHOD 2 — REASONABLE ROYALTY (MINIMUM): if lost profits cannot be proven, the patentee is entitled to AT LEAST a reasonable royalty; the hypothetical negotiation: what would a willing licensor and willing licensee have agreed to at the time infringement began, if both knew the patent was valid and infringed?; Georgia-Pacific Corp. v. U.S. Plywood Corp. (S.D.N.Y. 1970): 15-factor test for reasonable royalty; BOTH METHODS: a patentee can seek lost profits for some infringing sales (where they would have captured them) and reasonable royalty for the remainder.

Georgia-Pacific Corp. v. U.S. Plywood Corp. (S.D.N.Y. 1970) identified 15 factors for determining a reasonable royalty: FACTOR 1: the royalties the patentee has received for licensing the patent to others; FACTOR 2: rates paid by licensees for other patents comparable to the patent in suit; FACTOR 3: the nature and scope of the license (exclusive/non-exclusive; territory/field-of-use); FACTOR 4: the patentee's established policy to maintain exclusivity by not licensing; FACTOR 5: the commercial relationship between the patentee and licensee (competitors, non-competitors); FACTOR 6: effect of selling patented items on promoting sales of patentee's other products; FACTOR 7: the duration of the patent and license term; FACTOR 8: established profitability of the patented product, its commercial success, current popularity; FACTOR 9: the utility and advantages of the patent property over old modes or devices; FACTOR 10: the nature of the patented invention; character of the commercial embodiment; FACTOR 11: the extent infringer has made use of the invention and the value of that use; FACTOR 12: the portion of profit customarily allowed in the particular business (industry royalty rates); FACTOR 13: the portion of realizable profits creditable to the invention vs. other elements (apportionment — the most contested factor in modern cases); FACTOR 14: the opinion testimony of qualified experts; FACTOR 15: the amount the infringer and patentee would agree to if they were negotiating in good faith (the ultimate question — this factor is a synthesis of the others); HOW APPLIED: damages experts typically analyze each factor and assign a weight; the analysis informs a royalty base × royalty rate calculation; NOT ALL FACTORS ARE ALWAYS RELEVANT: courts apply the factors flexibly based on available evidence.

Apportionment is the requirement that patent damages be limited to the economic contribution of the patented features — not the entire product's value: PRINCIPLE: when a patented feature is just one component of a multi-feature product, the patentee is entitled only to the value attributable to the patented feature; NOT THE ENTIRE PRODUCT: in complex products (smartphones, computers, cars), a single patent may cover only one of hundreds or thousands of features; the patentee cannot recover damages based on the entire product price; CORNISH v. SEYMOUR CONTROLS: courts have consistently required apportionment when the patented feature is not the basis for consumer demand; SMALLEST SALABLE PATENT-PRACTICING UNIT (SSPPU): the royalty base should be the smallest salable unit that embodies the patented features; LASER DYNAMICS v. QUANTA COMPUTER (Fed. Cir. 2012): the royalty base should be the smallest salable patent-practicing unit, not the entire end product; ENTIRE MARKET VALUE RULE (EMVR) — EXCEPTION: if the patented feature creates all or substantially all of the demand for the entire end product (the feature is the basis of consumer demand), the entire end product can be the royalty base; EMVR is a rare exception, not the rule; party must demonstrate the patented feature drives demand for the entire product; METHODOLOGY: patentee's damages expert must: (a) identify the royalty base (SSPPU or entire market value with justification); (b) show the royalty rate represents the value of the patented feature within that base; (c) discount for features not covered by the patent; MODERN TREND: courts are increasingly strict about apportionment; juries can award only the value of what was patented; DESIGN PATENT EXCEPTION (§ 289): total profits from the article of manufacture to which the design is applied; Supreme Court in Samsung v. Apple (S.Ct. 2016) defined 'article of manufacture' — may be the entire product or a component.

Enhanced damages up to three times compensatory damages are available for willful infringement under § 284: STATUTORY BASIS: 35 U.S.C. § 284: 'the court may increase the damages up to three times the amount found or assessed'; discretionary — not automatic even if willfulness is found; HALO ELECTRONICS v. PULSE ELECTRONICS (S.Ct. 2016): clarified the standard for enhanced damages; objective recklessness is NOT required; subjective bad faith or egregious conduct is the relevant inquiry; STANDARD: enhanced damages are appropriate for 'culpable conduct' — bad faith, intentional copying, willful blindness; the infringer must have known (or should have known) about the patent and infringed anyway without a reasonable defense; FACTORS FOR ENHANCEMENT (Read Corp. v. Portec, Fed. Cir. 1992): courts consider 9 Read factors: (a) whether infringer deliberately copied; (b) whether infringer investigated after learning of patent; (c) infringer's litigation behavior; (d) infringer's size and financial condition; (e) closeness of the case; (f) duration of infringement; (g) remedial action by infringer; (h) infringer's motivation for infringement; (i) attempt to conceal misconduct; MAXIMUM: 3× compensatory damages (treble damages); a $100M base award could become $300M if willful; ATTORNEY FEES: § 285 exceptional case fee awards are separate from § 284 enhanced damages but are often sought simultaneously in egregious cases; PREJUDGMENT INTEREST: § 284 also provides for prejudgment interest from the time infringement began; typically calculated at the prime rate compounded quarterly; adds significant value in long-running cases (10+ years of infringement); POST-JUDGMENT INTEREST: mandatory under 28 U.S.C. § 1961 at the US Treasury rate.

The hypothetical negotiation is the centerpiece of reasonable royalty analysis — here is how experts construct it in practice: NEGOTIATING DATE: damages are calculated from the date infringement began (first infringing act); the hypothetical negotiation is conducted at that date; parties are deemed to have equal knowledge of the patent (valid and infringed); REAL-WORLD LICENSES AS A STARTING POINT: the most probative evidence for reasonable royalty is real licenses for the same or comparable patents; comparable license analysis: find licenses for patents in the same technology area; adjust for differences in scope, exclusivity, timing, and the specific features covered; LaserDynamics (Fed. Cir. 2012): comparable licenses must be technically and economically comparable; ROYALTY STACKING: if a product requires licenses to many patents, paying each patent's claimed royalty rate might result in royalties exceeding the entire product value; stacking analysis shows the reasonable total royalty burden; PROFIT-SPLIT METHOD: divide the expected profits from the product between the patentee and licensee; a common starting point: 25% to the licensor (Nash bargaining) — the 25% rule of thumb; NOTE: Federal Circuit in Uniloc v. Microsoft (2011) rejected the 25% rule as a standalone starting point without proper analysis; must be tied to the specific case facts; RUNNING ROYALTY vs. LUMP SUM: courts may award damages as a running royalty (percentage of sales going forward) OR a lump sum (present value of all past and future royalties); ONGOING ROYALTY (POST-VERDICT): when a permanent injunction is denied, courts may award an ongoing royalty for post-verdict infringement; ongoing royalties may be higher than the hypothetical negotiation rate because the infringer is now an adjudged infringer with less leverage; EXPERT DISCLOSURE REQUIREMENTS: damages expert must disclose the complete basis for opinions under Rule 26(a)(2)(B); courts may exclude expert testimony that is not sufficiently tied to the specific facts of the case under Daubert.