Andrew Pickholtz appeals from the decisions of the United States District Court for the Northern District of California denying his motion for summary judgment of infringement and granting the defendants’ (“Rainbow’s”) motion for summary judgment of noninfringement of Pickholtz’s U.S. Patent 4,593,353. Pickholtz also appeals from the denial of his motion for attorney fees resulting from Rainbow’s discovery misconduct. Because the court erred in construing the claims of the '353 patent, we reverse the court’s grant of summary judgment in favor of Rainbow. Because there exist genuine issues of material facts under the proper claim construction, we affirm the court’s denial of *1368 Pickholtz s motion for summary judgment. Because the court abused its discretion in refusing to award attorney fees to Pick-holtz, we vacate that decision. We remand for further consideration of the infringement issue under the proper claim construction and the attorney fee issue under the court’s inherent power.
BACKGROUND
A. The '858 Patent and its Prosecution History
Pickholtz is the inventor and owner of the '353 patent, which is directed to an apparatus for the prevention of piracy of computer software. The invention prevents computer software on an external memory device (e.g., a magnetic disc) from executing on a computer unless the software is authorized to do so. '353 patent, abstract. The authorization check involves two authorization codes recorded on the external memory device along with the protected software. Id. The authorization codes are members of the same pseudo-random sequence, and the computer is equipped with a pseudorandom number (“PRN”) generator that generates that sequence. Id. at col. 3,11. 37-54. Before the invention enables execution of the software from the external media device, the first authorization code is read from the external media device and used to initialize the PRN generator. Id. From that initial condition, the PRN generator operates, thereby creating another PRN. Id. Only if that PRN matches the second authorization code on the external media device is the software allowed to execute. Id.
The '353 patent illustrates the invention in Figure 1, which the patent describes as “a block diagram representation of a computer system including software protection, in accordance with the present invention.” Id. at col. 2, 11. 57-59 (emphasis added).
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As the patent describes that figure, a “computer system 10” comprises a central processing unit (“CPU”) 12 in communication with a main memory 14. Id. at col. 2, 1. 66 — col. 3, 1. 1 (emphasis added). For additional details regarding possible embodiments of the CPU 12 and the main memory 14, the patent references two general microprocessor textbooks. Id. at col. 3, 11. 4-17. The computer system 10 also comprises a disc 18, on which is stored the protected software and the two authorization codes, as well as a PRN generator 22, which is preferably a hardware module encased in plastic, epoxy, or radiation opaque material to prevent inspection and tampering. Id. at col. 3,11. 37-54, col. 5,11. 21-32. Alternatively, the PRN generator 22 may be implemented in software. Id. at col. 5,11. 21-32.
*1369 Pickholtz originally submitted claims to the Patent and Trademark Office (“PTO”) defining the invention as a method and an apparatus for use with a “data processing system.” However, Pickholtz changed his claims substantially before they were allowed. The examiner assigned to Pick-holtz’s patent application rejected all claims under 35 U.S.C. § 103 as being unpatentable over U.S. Patent 4,446,519, issued to David C. Thomas. Briefly, Thomas disclosed software that, when loaded into a computer’s working memory, would generate a PRN to be sent to an electronic security device (ESD) on a plug-in circuit board for verification before enabling execution of the software. '519 patent at col. 1, 1. 61 — col. 2, 1. 16. In response to the rejection, Pickholtz replaced the pending claims with new claims, which were allowed essentially as submitted, and argued that Thomas lacked (1) a PRN generator device “located in the computer”; (2) a sealed casing on the PRN generator device; and (3) a second authorization code stored on an external memory. The examiner then allowed the claims, and the PTO issued the '353 patent. Claim 1, the only independent claim in the '353 patent, defines the invention as an apparatus for use with a “computer” and specifies that the PRN generator device is “located in the computer”:
1. A software protection apparatus using first and second authorization codes and a pseudorandom number, said software protection apparatus for use with a computer, comprising:
an external memory device having computer software and a first authorization code and a second authorization code at selected data locations, wherein said second authorization code is part of a pseudorandom sequence;
means for reading said external memory device, said reading means located in the computer;
pseudorandom number generator device located in the computer and coupled to said reading means, for generating a pseudorandom number in response to said reading means reading said first authorization code from said external memory device, said first authorization code being read prior to execution of said computer software, said pseudorandom number generator device including a sealed casing, thereby preventing identification of the pseudorandom number generator algorthim [sic];
processing means located in the computer and coupled to said reading means and said pseudorandom number generator device, for comparing the pseudorandom number generated by said pseudo-random number generator device with the second authorization code read from selected data locations in said external memory device, said processing means generating an enable signal in response to a positive comparison of the pseudo-random number with the second authorization code for enabling execution of the computer software stored in said external memory device.
'353 patent at col. 6, 11. 2-34 (emphasis added).
B. The District Court Proceedings
Pickholtz, who is an attorney, brought suit pro se against Rainbow alleging that Rainbow infringed the '353 patent by its manufacture and sales of certain computer dongles, which are small devices that externally connect to a computer port. Rainbow’s dongle, under the control of a driver program, acts as a hardware key, hindering any unauthorized use of computer software. The driver program detects the presence of the dongle and exchanges encrypted information with it, preventing execution of a protected software program unless the dongle is attached to a port of *1370 the computer. Pickholtz alleged that the Rainbow dongle contains a PRN generator device as recited in claim 1, such that a computer with a Rainbow dongle attached and with its driver program executing infringes claim 1. Rainbow disputed the allegation that its dongle contains a PRN generator and argued that, even accepting that allegation, the dongle’s PRN generator would not be “located in the computer,” as the claim requires. Thus, a critical issue before the district court was construction of the term “computer” and the phrase “located in the computer” in claim 1.
Pickholtz proposed a broad construction of the term “computer,”
viz.,
“one or more processing units and the memory, peripherals and other devices connected electronically to and communicating with the processing units.”
Pickholtz v. Rainbow Techs., Inc.,
No. C 98-2661, slip op. at 5 (N.D.Cal. Apr. 28, 2000) (claim construction memorandum and order). Pickholtz supported that construction with technical literature and expert testimony. Rainbow proposed a narrower definition: a CPU and main memory, sans peripherals.
Id.
The district court adopted Rainbow’s construction as the unambiguous meaning of the term on the basis of the patent’s intrinsic evidence.
Id.
at 5-6 (construing the term “computer” as “the CPU and main memory on the CPU’s circuit board, which taken together, form a part of a dedicated microprocessor system capable of executing instructions on data, and which exclude connected peripheral devices”). In arriving at that construction, the district court focused on two aspects of the intrinsic evidence. First, when describing Figure 1, the patent uses the term “computer system” to describe that collection of a CPU, main memory, a PRN generator, and a disc peripheral, whereas the claim uses the term “computer.” From that distinction, the court concluded that a “computer” is different from a “computer system.”
Id.
at 5. Secondly, the phrase “located in the computer” would be surplusage if the term “computer” were construed as broadly as Pickholtz proposed.
Id.
at 5-6. The court also read Pickholtz’s prosecution remarks traversing the Thomas rejection as drawing a distinction between a “computer” and peripherals connected to a computer.
Id.
at 6-7. Because Rainbow’s construction flowed unambiguously from the intrinsic evidence, the court gave no weight to Pickholtz’s extrinsic evidence.
Id.
at 6. As a consequence of its construction of the term “computer,” the court construed the phrase “located in the computer” to mean “in the CPU, main memory or on the circuit board, but excluding connected peripherals,”
id.
at 10, and consequently determined on summary judgment that Rainbow’s dongles, being peripherals, do not infringe the '353 patent.
Pickholtz v. Rainbow Techs., Inc.,
During the course of the district court litigation, the parties had disagreements over discovery. Pursuant to local rules, Pickholtz was entitled to an electronic form of the source code utilized with Rainbow’s dongles and supporting documentation. Pickholtz v. Rainbow Techs., Inc., No. C 98-2661, slip op. at 1 (N.D.Cal. Apr. 24, 2000) (recommended order imposing sanctions). However, Rainbow did not promptly produce those documents. Id. On the ground of that tardiness, Pickholtz moved for sanctions under Fed.R.Civ.P. 37 as well as the court’s inherent power. A magistrate found that “[n]o substantial justification exists for the approximate year that it took defendants to produce the source code and supporting documentation in electronic format.” Id. However, “aware of no authority that would permit [him] to award plaintiff, a pro se litigant, *1371 attorney’s fees,” the magistrate limited Pickholtz’s monetary recovery to out-of-pocket expenses only. Id. at 2-3. The district judge adopted the magistrate’s resolution of the discovery issue. Pickholtz v. Rainbow Techs., Inc., No. C 98-2661, slip op. at 1 (N.D. Cal. June 9, 2000) (order).
Pickholtz appeals from the judgment of the district court. We have jurisdiction pursuant to 28 U.S.C. § 1295(a)(1).
DISCUSSION
We review a district court’s denial of summary judgment for an abuse of discretion.
Elekta Instrument S.A. v. O.U.R. Scientific Int’l, Inc.,
A determination of infringement requires a two-step analysis. “First, the court determines the scope and meaning of the-patent claims asserted.... [Second,] the properly construed claims are compared to the allegedly infringing device.”
Cybor Corp. v. FAS Techs., Inc.,
The awarding of attorney fees under Rule 37 involves a procedural issue not unique to patent law,
DH Tech., Inc. v. Synergystex Int’l, Inc.,
Pickholtz argues that the district court’s grant of summary judgment of nonin-fringement and denial of his own motion for summary judgment of infringement was based on a misconstruction of the term “computer” in the patent claims. Additionally, Pickholtz argues that the district court misinterpreted the law when it determined that it lacked authority to award a pro se litigant attorney fees under Rule 37.
A. Claim Construction
Pickholtz argues that the district court erred when it construed the term “computer” to exclude peripherals. He urges that whether a “computer” includes peripherals is unanswered by the intrinsic evidence and that we should therefore turn to the extrinsic evidence that supports his broader construction. He argues that “computer system” and “computer,” as used in his patent, are synonymous. He further argues that the court’s construction is wrong because a computer without peripherals would be incapable of accepting input or yielding output and therefore would be useless.
Pickholtz also contends that the court misconstrued the phrase “located in the computer” to mean “in the CPU, main memory or on the CPU circuit board, but excluding connected peripherals.” First, he argues that the court’s construction is inconsistent with the claims’ requirement that the PRN generator device be in a sealed casing, with the specification’s teaching that the PRN generator device is installable by the user on-site, and with the depiction in Figure 1 of the PRN generator device 22 as being separate from the CPU 12 and the main memory 14. Secondly, he argues that the court’s construction of the phrase “located in the computer” is inconsistent with the court’s construction of the term “computer” because the latter does not include the CPU circuit board. Thirdly, he urges that he did not distinguish his invention over Thomas during prosecution on the basis of the location of the PRN generator device.
Rainbow responds that the court’s construction is the unambiguous result of the intrinsic evidence. Rainbow draws attention to the fact that the patent claims refer to a “computer,” whereas the specification describes a “computer system” with reference to Figure 1. Thus, according to Rainbow, a “computer” is something less than a “computer system.” Rainbow also defends the court’s construction of the phrase “located in the computer” by arguing that it is consistent in part with the court’s definition of the term “computer,” that Pick-holtz’s broader construction would render the phrase superfluous, and that the prosecution history compels the court’s construction.
In interpreting claims, a court “should look first to the intrinsic evidence of record,
ie.,
the patent itself, including the claims, the specification and, if in evidence, the prosecution history.”
Vitronics Corp. v. Conceptronic, Inc.,
We agree with Rainbow that the proper construction of the term “computer” follows without ambiguity from the intrinsic evidence; however, that construction is not as Rainbow contends. Instead, we agree with Pickholtz that the '353 patent uses the terms “computer” and “computer system” as synonyms. Although we would typically be inclined to give meaning to the word “system,” rather than regard it as surplusage, see
Elekta Instrument,
The remaining intrinsic evidence, the prosecution history, does not compel a different result. Pickholtz originally submitted the claims in vastly different form, referring to the invention as part of a “data processing system” and reciting “a pseudorandom number generator at the data processing system.” Pickholtz changed the claims into their allowed form after the PTO rejected the claims as being obvious in light of the Thomas patent. Although Thomas clearly uses the terms “computer” and “computer system” in a part-whole relationship, '519 patent at fig. 2, col. 5, 11. 18-25, Pickholtz did not distinguish his invention over Thomas on the basis of any difference between a “computer” and a “computer system.” Despite Pickholtz’s argument to the PTO that Thomas lacks a “[PRN] generator device located in the computer,” Thomas clearly discloses PRN generating software, and that software is located in the core “computer” part of Thomas’s “computer system.” '353 patent at col. 4, 11. 37-48 (disclosing that the PRN generator is software loaded into the working memory and executed by the CPU). Pickholtz’s argument, although inaptly stated, can only be understood to mean that he considered Thomas’s software to not contain a PRN generator at all. Thus, although Pickholtz may have been casual and gratuitous in amending his claims and making arguments to distinguish over the Thomas patent, nothing in the prosecution history convinces us that the terms “computer” and “computer system” in the '353 patent have different meanings, even if they might have in the Thomas patent.
Accordingly, the district court erred when it concluded that the intrinsic evidence unambiguously imparted different meanings to the terms “computer” and “computer system.” On the contrary, they are used interchangeably in the '353 patent. Because the meaning of the term “computer” can be resolved from the intrinsic evidence alone, we need not rely on any extrinsic evidence,
see Vitronics,
Furthermore, as the patent’s specification includes one peripheral, a disc “reading means,” as part of the “computer system,” '353 patent at col. 6,11. 11-12; fig. 1 (disc 18), the synonymous term “computer” in the claims must include at least some peripherals. However, the term “computer” cannot be so unbounded as to include all devices connected in any way to the CPU, or else the phrase “located in the
*1374
computer,” and particularly the word “in,” would become meaningless. A peripheral distantly connected reasonably cannot be “in the computer.” Therefore, not everything somehow connected to a CPU can be a peripheral in the sense of being part of the “computer.” At the very least, however, the term “computer” encompasses peripherals that are within a reasonable proximity to the CPU and its main memory and directly connected to the CPU or the CPU circuit board. We need not, and indeed cannot, attempt to precisely define which peripherals may be part of the “computer” as used in the '353 patent for all cases.
See EMI Group N. Am. v. Intel Corp.,
In summax-y, we construe the phrase “located in the computer” to mean “located in the CPU, main memory, the CPU or main memory circuit boards, or qualifying peripherals” as indicated above. In view of that construction, it necessarily follows that the Rainbow dongle, when attached to a computer port, is such a peripheral and is therefore “located in the computer.” No reasonable juror could conclude otherwise.
B. Infringement
Because the district court granted summary judgment to Rainbow on the basis of an improper claim construction, we reverse that judgment. However, the court did not abuse its discretion in denying Piekholtz’s motion for summary judgment of infringement. Besides arguing that its dongle is not “located in the computer” (an argument that fails under the correct claim construction), Rainbow argued below that its accused product fails to satisfy several other claim limitations, e.g., whether the accused device reads an authorization code “prior to execution of the program,” whether the accused device “generate^] an enable signal ... for enabling execution of the computer software,” and whether the dongle generates “pseudorandom numbers” at all. The district court denied Pickholtz’s motion for summary judgment of infringement on the ground that Rainbow’s dongles are not “located in the computer”; the court did not address the other distinctions raised by Rainbow. Because those potential distinctions could at least raise genuine issues of material fact, summary judgment of infringement would not be appropriate. We therefore affirm the court’s denial of Pick-holtz’s motion for summary judgment.
C. Attorney Fees for Pro Se Litigants
Pickholtz contends that he is entitled under Rule 37 to recover the value of his own time as a
pro se
litigant because of Rainbow’s discovery misconduct. Pick-holtz, who is both a lawyer and a computer consultant, calculated a “lodestar” figure by multiplying his hourly rate by the number of hours he spent working on the contentious discovery to arrive at $264,039.94 as his opportunity cost. Pick-holtz’s argument is based on fairness and the furtherance of Rule 37’s purpose— deterring discovery abuse. Pickholtz contends that the paltry $1,500 the court awarded him for his expenses only encourages litigants to engage in improper discovery tactics against their
pro se
adversaries. Pickholtz points to
Prewitt v. Alexander,
Besides disputing the accuracy of Pick-holtz’s lodestar figure, Rainbow responds that the text of the rule is limited to “expenses incurred ... including attorney fees” and that Pickholtz did not incur as an expense the value of his time; that Pick-holtz’s proposal would unfairly reward pro se litigants for the value of their time when represented parties do not receive any compensation for their opportunity costs; and that Pickholtz grounded his request on Rule 37 only, not on the court’s inherent powers.
We agree with Rainbow that the language of the rule does not allow a pro se lawyer to receive fees for his own time. Our analysis is guided primarily by the plain language of the rule, the relevant portion of which reads:
[T]he court shall ... require the party or deponent whose conduct necessitated the motion of the party or attorney advising such conduct or both of them to pay to the moving party the reasonable expenses incurred in making the motion, including attorney fees....
Fed.R.Civ.P. 37(a)(4)(A) (emphasis added). The rule requires that the expenses be “incurred.” We consider that term to be controlling on the issue, as the term means “[t]o have liabilities cast upon one by act or operation of law, as distinguished from contract, where the party acts affirmatively[; t]o become liable or subject to.” Black’s Law Dictionary (abridged 5th ed.1983).
See also
Webster’s Third New International Dictionary (1986) (defining the term as “to become liable or subject to; to bring down upon oneself’). Thus, one cannot “incur” fees payable to oneself, fees that one is not obliged to pay.
See FMB-First Nat’l Bank v. Bailey,
Notwithstanding the plain language of the rule, Pickholtz argues that the objective of Rule 37 supports an award of attorney fees to
pro se
litigants. Pickholtz correctly notes that the objective of Rule 37 distinguishes the award of attorney fees pursuant to Rule 37 from the award of attorney fees under other fee-shifting statutes such as the Civil Rights Act, 42 U.S.C. § 1988, and the Freedom of Information Act (“FOIA”), 5 U.S.C. § 5529(a)(4)(E). Thus, the fee shifting provisions in the latter statutes are intended as an incentive for plaintiffs to retain independent counsel and therefore are not available to
pro se
litigants.
Kay v. Ehrler,
Our analysis of Rule 37 is analogous to the Eleventh Circuit’s analysis of Rule 11 on the same issue in
Massengale,
which is the only other federal appellate case to have addressed this issue.
Massengale
awarded no attorney fees.
Secondly,
Massengale
did expressly carve away from its holding the case in which a
pro se
litigant seeks to recover monetary sanctions equaling his income lost as a result of time away from work.
We therefore conclude that Rule 37 does not empower the district court to award attorney fees to a pro se litigant. Because the district court did not err as a matter of law in construing Rule 37, the district court acted within its discretion in denying Pickholtz attorney fees pursuant to Rule 37. We do not believe the Ninth Circuit, which has not ruled on the issue, would conclude otherwise concerning a rule of national applicability.
Having concluded that Rule 37 is not a proper basis for awarding attorney fees to Pickholtz, we turn next to whether the inherent powers of the district court may provide such a basis. Although Pickholtz mainly and most conspicuously grounded his request on Rule 37, he also sought relief under the court’s inherent powers, stating, “This Motion [for Sanctions under FRCP 37] and the [attached] Chronology describe numerous actions and inactions [by Rainbow] which are sanctionable under FRCP 37, the inherent powers of the Court or otherwise.”
A court’s exercise of its inherent powers is reviewed for an abuse of discretion.
Chambers v. NASCO, Inc.,
In
Chambers,
Chambers attempted to renege on an agreement he had made to sell a radio station to NASCO, Inc.
Id.
at 35-36,
[The inherent] power is both broader and narrower than other means of imposing sanctions. First, whereas each of the other mechanisms reaches only certain individuals or conduct, the inherent power extends to a full range of litigation abuses. At the very least, the inherent power must continue to exist to fill in the interstices.
Id.
at 46,
Chambers
thus permits, indeed requires, the court to separately consider Pickholtz’s motion for attorney fees under its inherent power, which is an independent basis for assessing sanctions, one not preempted by Rule 37. It is true that there is no federal statutory or appellate precedent for imposing attorney fees sanctions in favor of a
pro se
attorney under a court’s inherent power. However, sanctions have clearly been imposed under inherent power,
e.g., Chambers,
Exercise of the court’s inherent power must be done with “restraint and discretion.”
Id.
at 44,
CONCLUSION
Because the district court improperly construed the claim terms “computer” and “located in the computer” to exclude peripherals, we reverse the court’s grant of summary judgment in favor of Rainbow based upon that claim construction. Furthermore, because there exist unresolved factual issues concerning infringement, we affirm the court’s denial of Pickholtz’s motion for summary judgment of infringement and remand for resolution of those issues. Finally, because the court abused its discretion by failing to consider whether Pickholtz was entitled under its inherent power to compensation for his pro se representation in opposition to discovery abuse by Rainbow, we remand for the court to consider that issue. Accordingly, we
AFFIRM IN PART, REVERSE-IN-PART, and REMAND.
