Flatworld Interactives LLC v. Samsung Electronics Co.
FLATWORLD INTERACTIVES LLC v. SAMSUNG ELECTRONICS CO., LTD., Defendants Flatworld Interactives LLC v. LG Electronics, Inc.
Attorneys
Brian E. Farnan, Michael J. Farnan, FARNAN, LLP, Wilmington, DE, Steve W. Berman, Mark S. Carlson, HAGENS BERMAN SOBOL SHAPIRO, LLP, Seattle, WA, Attorneys for Plaintiff Flat World Interactives LLC Richard L. Horwitz, David E. Moore, Erich W. Struble, Bindu A. Palapura, POTTER ANDERSON & CORROON, LLP, Wilmington, DE, Victor H. Polk, GREENBERG TRAURIG, LLP, Boston, MA, Richard A. Edlin, Hyun Chung, Chang Joo Kim, Joshua L. Raskin, Kate Hutchins, John Handy, GREENBERG TRAURIG, LLP, New York, NY, Attorneys for Defendants Samsung Electronics Co., Ltd., Samsung Electronics America, Inc., and Samsung Telecommunications America, LLC, John W. Shaw, Karen E. Keller, David M. Fry, SHAW KELLER, LLP, Wilmington, DE, Steven Lieberman, Brian A Tol-lefson,, Joo Mee Kim, ROTHWELL, FIGG, ERNST & MANBECK, P.C., Washington, D.C., Y.S. Lee, Sonja Bae, LG ELECTRONICS, Seoul, Korea, Attorneys for Defendants LG Electronics, Inc., LG Electronics U.S.A., Inc., LG Electronics Mobilcomm U.S.A., Inc.
Full Opinion (html_with_citations)
MEMORANDUM OPINION
Pending before the Court are Defendantsâ (1) Motion for Summary Judgment of Invalidity under 35 U.S.C. § 112(a) (C.A. No. 12-804 D.I. 78; C.A. No. 12-964 D.I. 70); (2) Motion for Partial Summary Judgment Limiting Damages in the Case to Post-Complaint Activities (C.A. No. 12-804 D.I. 69; C.A. No. 12-964 D.I. 59); and (3) Motion to Strike Declaration of Eric J. Gould Bear in Opposition to Defendantsâ Motion for Summary Judgment of Invalidity (C.A. No. 12-804 D.I. 91; C.A. No. 12-964 D.I. 84)
For the reasons below, the Court will deny Defendantsâ motion for summary judgment on invalidity and grant Defendantsâ motion for partial summary judgment limiting damages. The Court will also grant the motion to strike the Declaration of Mr. Bear.
I. BACKGROUND
Plaintiff Interactives LLC (âPlaintiffâ) filed these patent infringement actions on June 22, 2012 against defendants Samsung Electronics America Inc., Samsung Electronics Co. Ltd., and Samsung Telecommunications America LLC (C.A. No. 12-804 D.I. 1), and on July 20, 2012 against defendants LG Electronics Inc., LG Electronics Mobilecomm Ă.S.A. Inc., and LG Electronics U.S.A. Inc. (collectively, âDefendantsâ) (C.A. No. 12-964 D.I. 1), alleging infringement of U.S. Patent No. RE43,318 (âthe '318 patentâ). The '318 patent is entitled, âUser interface for removing an object from a displayâ and relates to a system for manipulating images on a display using a touch-sensitive screen. In particular, the patent-in-suit discloses a system that removes an image from a screen display by the gesture of âthrowingâ it from the screen. The '318 patent is a reissue of U.S. Patent No. 6,920,619 (âthe '619 patentâ).
On October 21, 2013, Defendants filed their motion for summary judgment of invalidity under § 112(a), after having previously been granted leave to do so. (C.A. No. 12-804 D.I. 78; C.A. No. 12-964 D.I.
On October 15, 2013, Defendants also jointly, filed a motion for partial summary judgment limiting damages in the case to post-complaint activities (C.A. No. 12-804 D.L 69; C.A. No. 12-964 D.I. 59), which the Court had authorized Defendants to do during a teleconference on October 4, 2013 (D.I. 77 (âDisc.Tr.â) at 15-16), The parties completed briefing the motion for summary judgment limiting damages on November 12, 2013. (D.I.70, 82, 89)
On November 15, 2013, the Court held a Markman hearing, at which the Court also heard argument by the parties on the pending motions. (D.I.101) (âTr.â)
II. LEGAL STANDARDS
A. Motion to Strike
In Daubert v. Merrell Dow Pharm., Inc., 509 U.S. 579, 597, 113 S.Ct. 2786, 125 L.Ed.2d 469 (1993), the Supreme Court explained that Federal Rule of Evidence 702 creates âa gatekeeping role for the [trial] judgeâ in order to âensur[e] that an expertâs testimony both rests on a reliable foundation and is relevant to the task at hand.â Rule 702 requires that expert testimony âhelp the trier of fact to understand the evidence or to determine a fact in issue.â Expert testimony is admissible only if âthe testimony is based on sufficient facts or data,â âthe testimony is the product of reliable principles and methods,â and âthe expert has reliably applied the principles and methods to the facts of the case.â There are three distinct requirements for proper expert testimony: (1) the expert must be qualified; (2) the opinion must be reliable; and (3) the expertâs opinion must relate to the facts. See Elcock v. Kmart Corp., 233 F.3d 734, 741 (3d Cir.2000).
B. Summary Judgment
âThe court shall grant summary judgment if the movant shows that there is no genuine dispute as to any material fact and the movant is entitled to judgment as a matter of law.â Fed. R. Civ. P. 56(a). The moving party bears the burden of demonstrating the absence of a genuine issue of material fact. See Matsushita Elec. Indus. Co., Ltd. v. Zenith Radio Corp., 475 U.S. 574, 585-86, 106 S.Ct. 1348, 89 L.Ed.2d 538 (1986). An assertion that a fact cannot be â or, alternatively, isâ genuinely disputed must be supported either by citing to âparticular parts of materials in the record, including depositions, documents, electronically stored information, affidavits or declarations, stipulations (including those made for purposes of the motion only), admissions, interrogatory answers, or other materials,â or by âshowing that the materials cited do not establish the absence or presence of a genuine dispute, or that an adverse party cannot produce admissible evidence to support the fact.â Fed. R. Civ. P. 56(c)(1)(A) & (B). If the moving party carries its burden, the nonmovant must then âcome forward with specific facts showing that there is a genuine issue for trial.â Matsushita, 475 U.S. at 587, 106 S.Ct. 1348 (internal quotation marks omitted). The'Court will âdraw all reasonable inferences in favor of the non-moving party, and it may not make credibility determinations or weigh the evidence.â Reeves v. Sanderson Plumbing Prods., Inc., 530 U.S. 133, 150, 120 S.Ct. 2097, 147 L.Ed.2d 105 (2000).
C. Written Description
Pursuant to 35 U.S.C. § 112, Âś 1, the specification of a patent âshall contain a written description of the invention.â The written description âanalysis- compares the claims with the invention disclosed in the specification, and if the claimed invention does not appear in the specification,â the claim âfails regardless whether one of skill in the art could make or use the claimed invention.â Ariad Pharm., Inc. v. Eli Lilly & Co., 598 F.3d 1336, 1348 (Fed.Cir.2010). â[T]he test for sufficiency is whether the disclosure of the application relied upon reasonably conveys to those skilled in the art that the inventor had possession of the claimed subject matter as of the filing date.â Id. at 1351 (â[D]escription must clearly allow persons of ordinary skill in the 'art to recognize that [the inventor] invented what is claimed.â) (internal quotation marks omitted); see also Novozymes A/S v. DuPont Nutrition Biosciences APS, 723 F.3d 1336, 1344 (Fed.Cir.2013) (â[S]pecification must describe an invention understandable to [a] skilled artisan and show that the inventor actually invented the invention claimed.â).
âA determination that a patent is invalid for failure to meet the written description requirement of 35-U.S.C. § 112, Âś 1 is a question of fact.â Ariad, 598 F.3d at 1355 (internal quotation marks omitted). Because a patent âenjoys a presumption of validity,â a moving party âseeking to invalidate a patent at summary judgment must submit such clear and convincing evidence of invalidity so that no reasonable jury could find otherwise.â Eli Lilly & Co. v. Barr Labs., Inc., 251 F.3d 955, 962 (Fed.Cir.2001); see also 35 U.S.C. § 282; Ariad, 598 F.3d at 1354 (âA patent is presumed to be valid, and this presumption only can be overcome by clear and convincing evidence.â).
D. Limitation of Damages
âUpon finding for the claimant the court shall award the claimant damages adequate to compensate for the infringement [of its patent], but in no event less than a reasonable royalty for the use made of the invention by the infringer.... â 35 U.S.C.
Section 287(a) âpermits either constructive notice, which is accomplished by marking the article with the patent number, or actual notice.â Gart v. Logitech, Inc., 254 F.3d 1334, 1345 (Fed.Cir.2001).. When constructive notice via marking is absent, § 287(a) ârequires actual notice to the accused âto assure that the recipient knew of the adverse patent during the period in which liability accrues.â â Minks v. Polaris Indus., Inc., 546 F.3d 1364, 1376 (Fed.Cir.2008) (quoting SRI Int'l, Inc. v. Adv. Tech. Labs., Inc., 127 F.3d 1462, 1470 (Fed.Cir.1997)). Actual notice must be of âthe infringement,â not âmerely notice of the patentâs existence or ownership.â Amsted Indus. Inc. v. Buckeye Steel Castings Co., 24 F.3d 178, 187 (Fed.Cir.1994) (âActual notice requires the affirmative communication of a specific charge of infringement by a specific accused product or device.â).
Compliance with § 287(a) is a question of fact. See Maxwell v. J. Baker, Inc., 86 F.3d 1098, 1111 (Fed.Cir.1996). âThe duty of alleging, and the burden of proving, either actual notice or constructive notice is upon the patentee.â Id. (citation omitted).
III. DISCUSSION
A. Motion to Strike
In connection with its briefing opposing Defendantsâ motion for summary judgment of invalidity based on lack of written description, Plaintiffs filed the Declaration of Eric J. Gould Bear, an individual Plaintiff contends is a person of ordinary skill in the art at the time of the invention. {See D.I. 87, 102) Defendants move to strike the Bear Declaration, arguing it is improper, erroneous, and unnecessary expert testimony, for multiple reasons. (D.I.91, 92, 103)
Because the Court has concluded that it must deny Defendantsâ motion for summary judgment even without consideration of the Bear Declaration, the Court will grant Defendantsâ motion to strike. The Courtâs decision to strike the declaration is without prejudice to Plaintiffs ability to attempt to rely on Bear at a later point in this ease.
B. Motion for Summary Judgment of Invalidity
Defendants contend that they are entitled to summary judgment that the '318 patent is invalid because it contains a negative claim limitation â that the image displayed on a screen be âremovedâ from the screen, when the user drags the image above a threshold velocity, âwithout leaving a representative thereofâ â that is not adequately supported in the written description, as required by § 112(a). (D.I. 79 at 2-3) The negative claim limitation appears in claims 1, 7, and 15 of the '318 patent.
Plaintiff responds, first, that the claims do not contain a negative limitation. (D.I. 86 at 4-9) Next Plaintiff insists that, even if the claims do contain a negative limitation, the disclosures in the written description allow a person of ordinary skill to understand that the inventor was in possession of the negative limitation as of the filing date. (Id. at 10-11) Plaintiff contends further that, at a minimum, there are genuine disputes of material fact as to whether the '318 patent specification reasonably conveys to a skilled artisan that the inventor was in possession of the claimed invention, making summary judgment inappropriate. (Id. at 12-13) Taking the evidence in the light most' favorable to Plaintiff, the Court concludes that there is a genuine dispute of material fact, and will deny Defendantsâ motion for summary judgment.
As an initial matter, the Court agrees with Defendants that the claim language on which they base their motion is, indeed, a negative claim limitation. By separate opinion and order, the Court has today construed the disputed claim terms in the '318 patent. In resolving the partiesâ dispute over the construction of the term ârepresentative thereof,â as it appears in claims 1, 7, and 15, the Court has concluded that the term is not indefinite and has adopted Defendantsâ alternative proposed construction of âa portrayal or symbol of the removed image.â See Markman Op. at 18-23. In reaching this conclusion, the Court has determined that the claims contain a negative claim limitation.
The core § 112(a) inquiry is âwhether the disclosure of the application relied upon reasonably conveys to those skilled in the art that the inventor had possession of the claimed subject matter as of the filing date.â Ariad, 598 F.3d at 1351; see also Novozymes A/S, 723 F.3d at 1344 (â[T]he applicant must âconvey with reasonable clarity to those skilled in the art that, as of the filing date sought, he or she was in possession of the invention,â and demonstrate that by disclosure in the specification of the patent.â) (quoting Carnegie Mellon Univ. v. Hoffman-La Roche Inc., 541 F.3d 1115, 1122 (Fed.Cir.2008)). Under § 112(a), negative claim limitations are âadequately supported when the specification describes a reason to exclude the relevant limitation.â Santarus, Inc. v. Par Pharm., Inc., 694 F.3d 1344, 1351 (Fed.Cir.2012). âSuch written description support need not rise to the level of disclaimer. In fact, it is possible for the patentee to support both the inclusion and exclusion of the same material.â Id.
Here, the specification teaches a person of ordinary skill that once the image is removed from the screen, nothing related to it is left behind. The reason for excluding any representative of the removed image may be discerned from the specification. The specification explains that to enable âsmall children ... to be able to
â Defendantsâ contention that Plaintiffs reply brief on indefiniteness, and its discussion of the inventorâs (Dr. Milekic) statement that he had not considered it part of his research to leave a representative of a thrown image on the screen, constitutes an admission that the negative limitation was not part of his conception of his invention, is unavailing. (D.I. 127 at 1) (citing D.I. 125 at 2) At most, Dr. Milekicâs deposition testimony, and Plaintiffs related statements, show that the inventor never contemplated affirmatively âleaving a representative imageâ behind. They do not show the opposite: that he failed to possess the concept of not leaving a representative behind.
The Court finds that there remain genuine issues of material fact and will deny summary judgment of invalidity based on lack of written description.
C. Motion for Summary Judgment to Limit Damages
1. Marking during reissue proceedings
It is undisputed that Plaintiff has produced in discovery a single embodiment of th'e '318 patent: an installation at the Philadelphia Zoo Snow Leopard Interactive Exhibit in July 2009. (D.I. 82 at 2, 3) (citing D.I. 83 (Declaration of Slavaljub Milekic) (âMilekic Deckâ) at Âś 5) As of this date, the original '619 patent had been issued, but was undergoing reissue proceedings, from which would ultimately emerge the '318 patent-in-suit. It is further undisputed that Plaintiff failed to mark the Philadelphia Zoo embodiment. Plaintiff contends, however, that it was not required to mark the Philadelphia Zoo embodiment because of the then-ongoing reissue proceedings. Plaintiff argues that at this time it could not have marked the product because it could not have known whether any claims would be allowed. (D.I. 82 at 4) While Plaintiff concedes that during a reissue proceeding an original patent number can be placed on an embodiment of the invention, to Plaintiff doing so might lead to claims for false marking, if it were to turn out that no claims emerged from the reissue. In Plaintiffs view, to require marking in these circumstances âcreates a conflict between the notice policy served by 35 U.S.C. § 287âs limitation on damages when products have not been marked and the false marking statute, 35 U.S.C. § 292.â (Id. at 5)
The parties have not directed the Court to any authority addressing this situation. Having considered the partiesâ arguments and the authorities cited, the Court disagrees with Plaintiffs position, as it appears to be based on a misapprehension of the nature of a patent undergoing reissue and, further, ignores the plain language of 35 U.S.C. § 252.
Section 252 provides that â[t]he surrender of the original patent shall take effect upon the issue of the reissued patent.â (Emphasis added) That is, a patent undergoing reissue remains in force during the reissue proceedings, and an accused in-fringer may be liable for infringing activity
[E]very reissued patent shall have the same effect and operation in law, on the trial of actions for causes thereafter arising, as if the same had been originally granted in such amended form, but in so far as the claims of the original and reissued patents are substantially identical, such surrender shall not affect any action then pending nor abate any cause' of action then existing, and the reissued patent, to the extent that its claims are substantially identical with the original patent, shall constitute a continuation thereof and have effect continuously from the date of the original patent.
Plaintiff conflates the clear status'of the original patent prior to reissue with the separate idea that after the reissue is completed, a reissued patent is not necesâ˘sarily treated as a continuation of the original if its claims are not âsubstantially identical.â However, it is undisputed that by statute, the original '619 patent remained in force during the time the Philadelphia Zoo installation was sold and installed. As a result, § 287 applied and required marking.
Furthermore, requiring marking during reissue proceedings â that is, before reissuance â comports with the underlying purposes of § 287. As the Federal Circuit has explained, âThe marking statute serves three related purposes: 1) helping to avoid innocent infringement, 2) encouraging patentees to give notice to the public that the article is patented, and 3) aiding the public to identify whether an article is patented.â Nike, Inc. v. Wal-Mart Stores, Inc., 138 F.3d 1437, 1443 (Fed.Cir.1998). Accepting Plaintiffs position would have the effect of encouraging patentees not to mark when a valid patent remains in force, increasing the likelihood of innocent infringement. Doing so would also undermine the notice function of the patent, as an accused infringer would be deprived of an important source of notice â markingâ yet would still be liable for infringement in the absence of notice, should the reissue result in claims that are substantially identical to the earlier patent. See 35 U.S.C. § 252.
Notably, Plaintiff cites no authority for the proposition that marking embodiments with the original patent number during reissue prosecution, before reissuance occurs, and while an original patent remains in force, is a basis for a false marking claim under § 292. Given the reasoning above, this lack of precedent is unsurprising. '
The Court concludes that the reissue proceedings did not absolve the marking requirements of § 287, as during those proceedings the '619 patent remained in force. Hence, Plaintiff was required to provide actual or constructive notice of the patent in connection with the Philadelphia Zoo installation.
2. Constructive Notice
Plaintiff has stipulated that it did not mark any of its touch screen installations that practice the inventions claimed in the '318 patent. (D.I. 71 (Declaration of Jennifer Maisel (âMaisel Deckâ) Ex. B at 2)) Plaintiff contends, however, that § 287 does not bar damages for a failure to mark a relatively small number of products because its one embodiment, the Philadelphia Zoo installation, comes within a de minim-is exception. (D.I. 82 at 7-8)
Plaintiff relies on several district court decisions for this proposition. See, e.g., Am. Med. Sys., Inc. v. Med. Engâg Corp., 794 F.Supp. 1370 (E.D.Wis.1992), aff'd in part, revâd in part, 6 F.3d 1523 (Fed.Cir.1993); Maxwell v. K Mart Corp., 880 F.Supp. 1323 (D.Minn.1995); Hazeltine Corp. v. Radio Corp. of Am., 20 F.Supp. 668 (S.D.N.Y.1937). However, these cases are inapposite. In each, the de minimis
Plaintiff argues that its Philadelphia Zoo installation was only one article, and in comparison to the millions of infringing products released on the market its one article is de minimis. (D.I. 82 at 9) While this may be true, it is immaterial. The pertinent comparison is between the number of marked and unmarked embodiments made, offered, sold, or imported by the patentee, not a comparison between the patenteeâs and the accused infringersâ embodiments.
Constructive notice ârequires the record to show that âthe patentee consistently marks substantially all of its patented products.â â SEB S.A. v. Montgomery Ward & Co., 594 F.3d 1360, 1378 (Fed.Cir.2010) (quoting Sentry Prot. Prods., Inc. v. Eagle Mfg. Co., 400 F.3d 910, 918 (Fed.Cir.2005)), aff'd sub nom. Global-Tech Appliances, Inc. v. SEB S.A., 563 U.S. 754, 131 S.Ct. 2060, 179 L.Ed.2d 1167 (2011). Plaintiff is correct that only one embodiment was released, but this one embodiment was unmarked. Based on this undisputed fact, it follows that Plaintiff did not mark âsubstantially allâ of the patented articles it produced and sold. Hence, no reasonable juror could conclude that Plaintiff provided Defendants with constructive notice of the '318 patent.
3. Actual Notice
Taking the record evidence in the light most favorable to Plaintiff, the Court concludes that Plaintiff also failed to give Defendants actual notice of infringement. âActual noticeâ requires the âaffirmative communication of a specific charge of infringement by a specific accused product or device.â Amsted, 24 F.3d at 187.
As Defendants note, Plaintiff predicates its actual notice argument on a single document; a September 2007 form letter, allegedly sent to LG and Samsung. (D.I. 70 at 3; Disc. Tr. at 8) Plaintiff has not produced the actual letter, but instead has produced an example of a âform letterâ that Plaintiff contends was sent to Defendants. The letter states, in pertinent part:
I am writing this letter on behalf of the inventor and owner of the attached U.S.. Patent 6,920,916 [sic] to notify your company that the above-noted reissue application has been filed requesting that additional claims be added to this patent ... The inventor does not seek claims to which he is not entitled and desires that any prior art or other information which*389 may be relevant to the patentability of his invention be brought to the attention of the Patent Office so that it can be considered during the reissue proceedings. Your company is being notified because it may have knowledge of pertinent prior art.
(Maisel Decl., Ex. F) (emphasis added) As the text of the letter makes, clear. Plaintiff notified Defendants only of the opportunity to submit prior art for use in Plaintiffs reissue proceedings. The letter does not mention infringement, or even a specific product, The letter cannot be read to constitute the required affirmative communication of a âspecific charge of infringementâ by a âspecific accused product.â At bottom, the letter failed to provide actual notice.
Plaintiff suggests that the letter provided notice of the patent, thereafter allowing Defendants to deduce that they were infringing. (See Disc. Tr. at 8) The Court is not persuaded that this satisfies the notice requirement. As the Federal Circuit has stated, â[i]t is irrelevant ... whether the defendant knew of the patent or knew of his own infringement. The correct approach to determining notice under section 287 must focus on the action of the patentee, not the knowledge or understanding of the infringer.â Amsted, 24 F.3d at 187; see also Logitech, 254 F.3d at 1346 (â[W]hether or not the alleged in-fringer subjectively believed that the pat-enteeâs letter was a charge of infringement has no bearing on the adequacy of notice.â).
Consequently, no reasonable juror could conclude that Plaintiff provided Defendants actual notice. In combination with the Courtâs determinations that the notice obligation was not excused by the pen-dency of the reissue proceedings, and that Plaintiff also failed to provide Defendants constructive notice, the result is that Defendantsâ motion for summary judgment to limit damages based on Plaintiffs failure to mark must be granted. Plaintiff may only recover, at most, damages accruing after the date the complaint was filed in the respective actions against Samsung and LG.
IV. CONCLUSION
For the reasons given above, the Court will deny Defendantsâ Motion for Summary Judgment of Invalidity under 35 U.S.C. § 112(a) (D.I. 78; C.A. No. 12-964 D.I. 70) and grant Defendantsâ Motion for Partial Summary Judgment Limiting Damages in the Case to Post-Complaint Activities (D.I. 69; C.A. No. 12-964 D.I. 59). The Court also grants Defendantsâ Motion to Strike (D.I. 91; C.A. No. 12-964 D.I. 84) but without prejudice to Plaintiffs ability to attempt to rely on Mr. Bear at a later stage in the proceedings. An appropriate Order follows.
ORDER
At Wilmington, this 31st day of December, 2014:
For the reasons set forth in the Memorandum Opinion issued this same date, IT IS HEREBY ORDERED that:
1. Samsung Electronics America Inc., Samsung Electronics Co. Ltd, Samsung Telecommunications America LLC, LG Electronics Inc., LG Electronics Mobile-comm U.S.A. Inc., and LG Electronics U.S.A. Inc.âs (âDefendantsâ) Motion for Summary Judgment of Invalidity under 35 U.S.C. § 112(a) (C.A. No. 12-804 D.I. 78; C.A. No. 12-964 D.I. 70) is DENIED.
3. Defendantsâ Motion to Strike the Bear Declaration (C.A. No. 12-804 D.I. 91; C.A. No. 12-964 D.I. 84) is GRANTED. However, Plaintiff may attempt to rely on Mr. Bear during further stages of the proceedings.
4. The parties shall meet and confer and shall, within fourteen (14) days of the date of this Order, submit a joint status report, advising the Court as to their positions) as to how these cases should now proceed.
. The Court refers to the "D.I.â number in C.A. No. 12-804 for the remainder of the opinion, unless otherwise indicated.
. By separate opinion and order issued simultaneously with the instant opinion, the Court has construed the disputed terms of the patent-in-suit.
. See '318 patent at 15:12-13 ("without leaving any representative thereof in the displayâ); 15:47-48 ("without leaving any representative thereof on the screenâ); id. at 16:22-23 ("replacing the image with a re
. See generally Am. Med. Sys., Inc. v. Med. Engâg Corp., 6 F.3d 1523, 1535 (Fed.Cir.1993) (discussing Hazeltine as arising under predecessor statute to current § 287(a)).
. See also SRI, 127 F.3d at 1470 ("The requirement of actual notice under § 287(a) is designed to assure that the recipient knew of the adverse patent during the period in which liability accrues, when constructive notice by marking is,absent.â).