Dueling Claim Construction Standards at the PTAB and District Courts
By John Sepulveda
The United States Patent and Trademark Office (“USPTO”) and the federal district courts currently use two different standards to construe patent claims in patents and patent applications. The two standards are (1) the Broadest Reasonable Interpretation (“BRI”) Standard and (2) the Phillips Standard created by the Court of Appeals for the Federal Circuit (“CAFC”) in 2005.[1]
In general, the USPTO currently uses the broader BRI standard during patent prosecution and during America Invents Act (“AIA”) trial proceedings[2] conducted by the Patent Trial and Appeal Board (PTAB), a USPTO administrative tribunal.[3] However, depending on the expiration date of the patent, the PTAB also uses the Phillips standards to construe patent claims. Federal district courts and the International Trade Commission (“ITC”) use only the Phillips standard to construe patent claims. Thus, the use of the two different standards is unfair because the USPTO, in general, uses an arguably broader standard in its AIA trial proceedings than federal courts use during patent infringement litigation.
Recently, the Director of the USPTO, Andrei Iancu, signed a Notice of Proposed Rulemaking (“NPRM”).[4] If adopted, the proposed rules will shift how patent claims are interpreted in an issued patent or patent application by the PTAB. This change creates greater consistency and predictable outcomes in litigation that would provide a much fairer playing field for patent owners.
BRI Standard
The BRI standard is applied to patents that will not expire before a final PTAB written decision.[5] Under the BRI standard, the claim or claims at issue are given their “broadest reasonable construction in light of the specification of the patent in which it appears.”[6] The USPTO sometimes uses this standard during patent prosecution to give claims their broadest reasonable interpretation. The USPTO also uses this standard during reexamination proceedings and reissue proceedings, depending on whether the patent will expire before the final PTAB written decision. During prosecution and AIA trial proceedings, the BRI standard can be used to invalidate patents whereby the claims of the challenged patents are interpreted based on an expanded scope of prior art.
Courts have justified the USPTO’s use of the BRI standard for several reasons. First, the USPTO has used the BRI standard for over 100 years. Moreover, the courts have asserted that the approach “serves the public interest” by interpreting claims broadly during examination such that they are not given “broader scope than is justified.”[7] Any perceived unfairness during both reexamination and reissue proceedings is remedied, as an applicant may amend claims to “correct errors in claim language and adjust the scope of claim protection as needed.”[8]
There are several issues with the use of the BRI standard. First, district courts may grapple with whether issue preclusion (collateral estoppel) applies to PTAB construction. In addition, agency determinations have been held to have a preclusive effect in district court litigation.[9] However, the CAFC has stated that for PTAB claim construction decisions made under the BRI standard, issue preclusion is unlikely to apply because differing claim construction standards are applied in each case.[10] Thus, the PTAB ultimately does not litigate the same issue that is before the district court.[11] Additionally, there have been cases of a patent being found valid and infringed in a district court action using the Phillips standard that have been subsequently found invalid by the USPTO under the BRI standard.[12]
Phillips Standard
The Phillips standard is used in cases where the patent at issue has already expired or will expire within 18 months from entry of the post-issuance petition.[13] This standard is used in these cases because the owner’s opportunity for amending is “substantially diminished” when the patent expires.[14] The claims are construed to have “the meaning that the term would have to a person of ordinary skill in the art in question at the time of the invention . . . .”[15] This is often referred to as “the ordinary and customary meaning.”[16]
One potential issue is that the Phillips standard can sometimes produce a narrower construction than the BRI standard, since the BRI standard focuses on the patent specification and excludes the other types of evidence taken into account by the Phillips standard.[17] Therefore, the federal courts reliance on the Phillips standard may have the effect to impact strategy decisions and forum selection for both parties.
How the CAFC Has Applied These Standards Recently
In a recent case, In re Smith International, Inc.,[18] Smith owned a patent directed to a downhole drilling tool that included a “generally cylindrical tool body.”[19] The patent was the subject of an ex parte reexamination, brought during the infringement case Smith initiated against Baker Hughes.[20]
Claim 28, as amended, read as follows:
- An expandable downhole tool for use in a drilling assembly positioned within a wellbore having an original diameter borehole and an enlarged diameter borehole, comprising:
a body; and
at least one non-pivotable, moveable arm having at least one borehole engaging pad adapted to accommodate cutting structures or wear structures or a combination thereof and having angled surfaces that engage said body to prevent said arm from vibrating in said second position;
wherein said at least one arm is moveable between a first position defining a collapsed diameter, and a second position defining an expanded diameter approximately equal to said enlarged diameter borehole.[21]
During reexamination, the PTAB affirmed the examiner’s BRI interpretation of “body” in the claims as a broad term that could encompass other components, such as “mandrel” and “cam sleeve,” because the claims lacked further limiting features and the specification did not prohibit such a reading.[22] Given this interpretation, several claims were found to be anticipated and obvious.[23] The Federal Circuit reversed this decision, finding that the PTAB’s construction of “body” was unreasonably broad.[24] Whereas the claims recited “body” without any elaboration, the specification did not use the term in a generic manner. The term “body” was consistently referred to as a component that was distinct from other components such as the mandrel. The court rejected the PTAB’s reasoning that the specification did not proscribe its broad reading.[25]
The court held that BRI “is an interpretation that corresponds with what and how the inventor describes his invention in the specification, i.e., an interpretation that is ‘consistent with the specification.’”[26] The court held that interpretation by the PTAB was not the broadest reasonable interpretation, but instead the “broadest possible interpretation” absent an express definition or prohibition.[27]
Proposed USPTO Rules
A NPRM was signed on May 3, 2018 by USPTO Director Andrei Iancu.[28] Under the proposed approach, the USPTO would construe patent claims and proposed claims based on the record of the inter partes review (“IPR”), post-grant review (“PGR”), or covered business method patents (“CBM”) proceedings, taking into account the claim language itself, specification, and the prosecution history pertaining to the patent.[29] According to the proposed rules, the USPTO would apply the principles that the Federal Circuit articulated in Phillips.[30] The USPTO is also proposing amending the rules for PTAB trial proceedings to add that the USPTO will consider any prior claim construction determination concerning a term of the claim in a civil action, or an ITC proceeding, that is timely made of record in an IPR, PGR, or CBM proceeding.[31] The purpose of the proposed rules includes ensuring consistency in claim construction between the PTAB and proceedings in district court or at the ITC, and to increase judicial efficiency.[32]
Takeaways
The proposed change in the claim construction standard from BRI to the Phillips standard could lead to greater uniformity and predictability between the claim constructions adopted by the PTAB and the federal courts. If adopted, the new rules will harmonize the standard used for patentability and infringement. The BRI standard has been outcome determinative in many proceedings. In its current state, the discrepancy in claim interpretation standards often leads to unfair results.
[1] See Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005). During patent infringement lawsuits, United States federal district courts construe patent claims using the Phillips standard.
[2] The AIA trial proceedings conducted by the PTAB include reexamination proceedings, reissue proceedings, inter partes review, post-grant review, covered business method patent proceedings, derivations, and interferences.
[3] The relevant AIA trial proceedings include the reexamination proceeding and the reissue proceeding. A reexamination proceeding is a process whereby a third party or inventor can have a patent reexamined by a patent examiner to verify that the subject matter it claims is patentable. MPEP § 2209 (9th ed. Rev. 8, Jan. 2018). A reissue proceeding is instituted to correct an error in the patent such that the error resulting in the patent is deemed wholly or partly inoperative or invalid. Id. § 1401.
[4] Gene Quinn, PTO Proposes Rulemaking to Implement Phillips Claim Construction at PTAB, IP Watchdog (May 8, 2018), http://www.ipwatchdog.com/2018/05/08/pto-proposed-rulemaking-phillips-claim-construction-ptab/id=96995/.
[5] The Federal Circuit’s en banc decision in Phillips expressly recognized that the USPTO employs the “broadest reasonable interpretation” standard. 415 F.3d at 1316.
[6] In re Cuozzo Speed Tech., LLC, 793 F.3d 1268, 1275 (Fed. Cir. 2015) (citation omitted).
[7] Id. at 1276; see also In re Yamamoto, 740 F.2d 1569, 1571 (Fed. Cir. 1984).
[8] See Cuozzo, 793 F.3d at 1290 (citing Yamamoto, 740 F.2d at 1572).
[9] See, e.g., B & B Hardware, Inc. v. Hargis Indus., Inc., 135 S. Ct. 1293, 1304-05 (2015).
[10] See SkyHawke Tech., LLC v. Deca Int’l Corp., 828 F.3d 1373, 1376-78 (Fed. Cir. 2016).
[11] See id.
[12] See PPC Broadband, Inc. v. Corning Optical Comm’s RF, LLC, 815 F.3d 734 (Fed. Cir. 2016) (discussing the analysis as to how the BRI and the Phillips standard can lead to different results).
[13] MPEP § 2111 (9th ed. Rev. 8, Jan. 2018).
[14] See In re Rambus Inc., 694 F.3d 42 (Fed. Cir. 2012).
[15] Phillips, 415 F.3d at 1314.
[16] Id.
[17] See generally Facebook, Inc. v. Pragmatus AV, LLC, 582 F. App’x. 864 (Fed. Cir. 2014).
[18] 871 F.3d 1375 (Fed. Cir. 2017).
[19] Id. at 1377.
[20] Id. at 1378.
[21] Id. (emphasis in original).
[22] Id. at 1382.
[23] Smith, 871 F.3d at 1379.
[24] Id. at 1382.
[25] Id.
[26] Id. at 1383 (citation omitted).
[27] Id. (emphasis in original).
[28] Changes to the Claim Construction Standard for Interpreting Claims in Trial Proceedings Before the Patent Trial and Appeal Board, 83 Fed. Reg. 21221 (proposed May 9, 2018) (to be codified at 37 C.F.R. pt. 42).
[29] Id. at 21222.
[30] Id. at 21222-26.
[31] Id.
[32] Id. at 21223 (“The Office’s goal is to implement a fair and balanced approach, providing greater predictability and certainty in the patent system.”).
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