UNITED STATES PATENT AND TRADEMARK OFFICE ____________ BEFORE THE PATENT TRIAL AND APPEAL BOARD ____________ ATLANTA GAS LIGHT COMPANY Petitioner v. BENNETT REGULATOR GUARDS, INC. Patent Owner ____________ Case IPR2013-00453 Patent 5,810,029 ____________ REPLY IN SUPPORT OF PETITION Filed: July 30, 2014
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UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE PATENT TRIAL AND APPEAL BOARD
____________
ATLANTA GAS LIGHT COMPANY Petitioner
v.
BENNETT REGULATOR GUARDS, INC. Patent Owner
____________
Case IPR2013-00453
Patent 5,810,029
____________
REPLY IN SUPPORT OF PETITION
Filed: July 30, 2014
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TABLE OF CONTENTS
I. Introduction. ..................................................................................................... 1
II. The Level of Ordinary Skill in the Art. ........................................................... 2
III. The Bennett and Prahl Declarations Are Unreliable. ...................................... 4
IV. The Board Should Decline To Read Limitations Into The ‘029 Patent. ....................................................................................... 6
A. Internally Relieved Regulator. .............................................................. 6 B. Large Vent Tube. ................................................................................... 7 C. Minimum Gap Between Baffle And Side Wall Of Skirt. ..................... 7
V. Claims 1 and 5 Of The ‘029 Patent Are Anticipated By Peterson. ................. 8
VI. Claims 2-8 Are Obvious Over Peterson In View Of Prior Art InThe ‘029 Patent, Ferguson, and/or Ohmae Under 35 U.S.C. § 103(a). ............................................................................. 10
VII. Claims 1 and 4 Of The ‘029 Patent Are Anticipated By Ward. .................... 12
VIII. Claims 2-8 Are Obvious Over Ward In View Of Prior Art in ‘029 Patent, Ferguson, and/or Ohmae Under 35 U.S.C. § 103(a). ................ 15
IX. AGLC’s Petition Identified The Correct Real Party-In-Interest And Was Timely Submitted. ......................................................................... 15
A. MRC Global, Inc. and McJunkin Red Man Corp. .............................. 15 B. AGL Resources, Inc. and AGL Services Co. ...................................... 17
Bell & Howell Document Mgmt. Prod. Co. v. Altek Sys., 132 F.3d 701 (Fed. Cir. 1997) .............................................................................. 4
Broadcom Corp. v. Telefonaktiebolaget L. M. Ericsson, IPR2013-00601, Paper 23 ................................................................................... 16
CAE Screenplates Inc. v. Heinrich Fiedler GmbH & Co. KG, 224 F.3d 1308 (Fed. Cir. 2000) ............................................................................ 9
In re Donohue, 766 F.2d 531 (Fed. Cir. 1985) ................................................................ 10, 13, 15
Douglas Dynamics, LLC v. Buyers Prods. Co., 745 F. Supp. 2d 876 (W.D. Wis. 2010) ................................................................ 5
Macauto U.S.A. v. BOS GmbH & KG, IPR2012-00004, Paper No. 18 ............................................................................ 20
Motorola Mobility LLC v. Arnouse, IPR2013-00010, Paper 20 ................................................................................... 17
MPT, Inc. v. Marathon Labels, Inc., Case No. 1:04-cv-2357, 2006 U.S. Dist. LEXIS 38980 (N.D. Ohio Jun. 13, 2006) .................................................................................... 5
Nichia Corp. v. Emcore Corp, IPR2012-00005, Paper 68 ..................................................................................... 3
Synopsys, Inc. v. Mentor Graphics Corp., IPR2012-00042, Paper 60 ..................................................................................... 3
iii
Strickling v. Joe Behr Plumbing and Heating, Inc., Case No. 98CA104, 1999 Ohio App. LEXIS 4254 (Ohio App. Aug. 27, 1999) ................................................................................... 5
Exhibit 1006: Canadian Meter Company Quality Communiqué
Exhibit 1007: Patent Owner Proposed Claim Construction
Exhibit 1008: Prosecution History, Ex Parte Control No. 90/006,314
Exhibit 1009: Barnett Affidavit in Bennett Regulator Guards, Inc. v. Canadian Meter Company, Inc. et al., Case No. 1:04-cv-00177-JRA (N.D. Ohio)
Exhibit 1010: Royce Affidavit in Bennett Regulator Guards, Inc. v. Canadian Meter Company, Inc. et al., Case No. 1:04-cv-00177-JRA (N.D. Ohio)
Exhibit 1011: Waddell Affidavit in Bennett Regulator Guards, Inc. v. Canadian Meter Company, Inc. et al., Case No. 1:04-cv-00177-JRA (N.D. Ohio)
Exhibit 1012: Images of Accused Product in Bennett Regulatory Guards, Inc. v. McJunkin Red Man Corp. and Atlanta Gas Light Company, Civil Action 5:12-cv-1040 (N.D. Ohio)
Exhibit 1013: Plaintiff Infringement Contentions in Bennett Regulatory Guards, Inc. v. McJunkin Red Man Corp. and Atlanta Gas Light Company, Civil Action 5:12-cv-1040 (N.D. Ohio)
Exhibit 1014: U.S. Patent No. 5,810,029 (corrected)
Exhibit 1015: U.S. Patent No. 2,620,087 (corrected)
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Exhibit 1016: U.S. Patent No. 2,494,679 (corrected)
Exhibit 1017: U.S. Patent No. 3,985,157 (corrected)
Exhibit 1018: U.S. Patent No. 4,957,660 (corrected)
Exhibit 1019: Canadian Meter Company Quality Communiqué (corrected)
Exhibit 1020: Patent Owner Proposed Claim Construction (corrected)
Exhibit 1021: Prosecution History, Ex Parte Control No. 90/006,314 (corrected)
Exhibit 1022: Barnett Affidavit in Bennett Regulator Guards, Inc. v. Canadian Meter Company, Inc. et al., Case No. 1:04-cv-00177-JRA (N.D. Ohio) (corrected)
Exhibit 1023: Royce Affidavit in Bennett Regulator Guards, Inc. v. Canadian Meter Company, Inc. et al., Case No. 1:04-cv-00177-JRA (N.D. Ohio) (corrected)
Exhibit 1024: Waddell Affidavit in Bennett Regulator Guards, Inc. v. Canadian Meter Company, Inc. et al., Case No. 1:04-cv-00177-JRA (N.D. Ohio) (corrected)
Exhibit 1025: Images of Accused Product in Bennett Regulatory Guards, Inc. v. McJunkin Red Man Corp. and Atlanta Gas Light Company, Civil Action 5:12-cv-1040 (N.D. Ohio) (corrected)
Exhibit 1026: Plaintiff Infringement Contentions in Bennett Regulatory Guards, Inc. v. McJunkin Red Man Corp. and Atlanta Gas Light Company, Civil Action 5:12-cv-1040 (N.D. Ohio) (corrected)
Exhibit 1027: Declaration of Bob Schnorr
Exhibit 1028: Declaration of Brian K. Shore
Exhibit 1029: Order, D.I. 68, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Jul. 3, 2013)
vi
Exhibit 1030: Declaration of James Petersen
Exhibit 1031: Excerpts of the June 17, 2014 Dep. Tr. of Gregory Bennett
Exhibit 1032: Excerpts of the June 18, 2014 Dep. Tr. of Dr. Joseph Prahl
Exhibit 1033: U.S. Patent No. 417,135
Exhibit 1034: U.S. Patent No. 2,306,746
Exhibit 1035: U.S. Patent No. 2,827,069
Exhibit 1036: U.S. Patent No. 3,012,573
Exhibit 1037: Aug. 30, 2012 Declaration of Barbara Christopher
Exhibit 1038: Notice of Service, D.I. 4, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Jul. 18, 2012)
Exhibit 1039: Plaintiff’s Motion for Leave to File First Amended Complaint, D.I. 18, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Nov. 6, 2012)
Exhibit 1040: Feb. 25, 2013 Declaration of Barbara Christopher
Exhibit 1041: Fisher Bulletin 71.1:S250
Exhibit 1042: U.S. Patent No. 4,675,143
Exhibit 1043: U.S. Patent No. ELECTRAFIL® G-50/SS/5 Data Sheet
Exhibit 1044: U.S. Patent No. 1,461,738
Exhibit 1045: 1941 RegO LP GAS Pocket Guide
Exhibit 1046: Rockwell Gas Regulator Handbook
Exhibit 1047: Itron B24 Regulator Description
Exhibit 1048: Excerpts of Swapan K. Bhattacharya, Metal-Filled Polymers (1986)
vii
Exhibit 1049: U.S. Patent No. 2,721,357
Exhibit 2001: Protective Order, D.I. 39, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Dec. 12, 2012)
Exhibit 2002: Complaint, D.I. 1, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Apr. 26, 2012)
Exhibit 2003: Notice of Service, D.I. 3, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Apr. 27, 2012)
Exhibit 2004: First Amended Complaint, D.I. 24, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Nov. 21, 2012)
Exhibit 2005: Parties’ Joint Notice, D.I. 23, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Nov. 21, 2012)
Exhibit 2006: Order, D.I. 68, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Jul. 3, 2013)
Exhibit 2007: Yahoo! Finance Report on MRC Global Inc.
Exhibit 2008: Businessweek.com McJunkin Red Man Corp. Company Overview
Exhibit 2009: MRCglobal.com Corporate Biographies
Exhibit 2010: MRCglobal.com Company Overview
Exhibit 2011: LinkedIn Profile of Dedi Wilson
Exhibit 2012: Texas Secretary of State website McJunkin Red Man Corporation Inquiry
Exhibit 2013: McJunkin Red Man Corporation Registration Application
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Exhibit 2014: Defendant McJunkin Red Man Corporation Answer and Counterclaims to Plaintiff’s First Amended Complaint, D.I. 37, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Dec. 10, 2012)
Exhibit 2015: MRC August 1, 2013 Press Release
Exhibit 2016: Defendant McJunkin Red Man Corporation’s Motion to Dismiss, D.I. 14, Bennett Regulator Guards, Inc. v. Atlanta Gas Light Company, et al., Northern District of Ohio Case No. 5:12-cv-1040 (Aug. 31, 2012)
Exhibit 2017: Confidential Contract
Exhibit 2018: Confidential Agreement
Exhibit 2019: Patent Owner’s Amended First Discovery Requests to Petitioner
Exhibit 2020: E-mail exchange
Exhibit 2021: Aug. 1, 2012 letter from R. Issac to R. Schnorr
Exhibit 2022: E-mail
Exhibit 2023: E-mail
Exhibit 2024: E-mail
Exhibit 2025: E-mail
Exhibit 2026: E-mail
Exhibit 2027: E-mail
Exhibit 2028: E-mail
Exhibit 2029: E-mail
Exhibit 2030: Jul. 23, 2013 letter from R. Issac to R. Schnorr
Exhibit 2031: Aug. 5, 2013 letter from R. Schnorr to R. Issac
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Exhibit 2032: Oct. 13, 2013 letter from R. Issac to R. Schnorr
Exhibit 2033: Nov. 25, 2013 e-mail R. Schnorr to R. Issac
Exhibit 2034: Leadferret.com profile of Byrony Hodges
Exhibit 2035: aglresources.com About Us Other Officers
Exhibit 2036: Declaration of Joseph M. Prahl
Exhibit 2037: Declaration of Gregory Bennett
Exhibit 2038: Excerpts of the Oct. 23, 2012 Dep. Tr. of Barbara Christopher
Exhibit 2039: Jun. 16, 1995 Transmittal of Patent Application
Exhibit 2040: Correspondence
Exhibit 2041: Redaction Log
Exhibit 2042: LinkedIn Profile of Brian Hannon
Exhibit 2043: Uncertified Dep. Tr. of Bob Schnorr
Exhibit 2044: List of Deposition Exhibits
Exhibit 2045: LinkedIn Profile of Bob Schnorr
Exhibit 2046: Second Declaration of Barbara Christopher
Exhibit 2047: Selected AGLR Officer’s Bios
Exhibit 2048: Business Card of Bob Schnorr
Exhibit 2049: Service Mark Registration No. 3,786,639
Exhibit 2050: Service Mark Registration No. 3,218,549
1
I. Introduction.
The Patent Owner’s Response (Paper 55 (“Resp.”)) follows the common
path of attempting to preserve patentability by reading new limitations into claims
that are unpatentably broad. These phantom limitations – an internally relieved
regulator, a large vent tube, and a minimum baffle-skirt gap for high mass flow of
gas – are not stated in the claims or supported by the specification of the ‘029
Patent. Rather, the Patent Owner relies on a declaration from a named inventor
hoping to profit from the ‘029 Patent and an expert whose analysis is unreliable on
its face. In contrast, the intrinsic evidence shows that these purported limitations –
which the Patent Owner touts as preserving patentability – simply do not exist.
The Patent Owner also relies on an overly narrow reading of the prior art.
For example, the Patent Owner argues that the devices disclosed in the Peterson
and Ward patents only allowed air to breathe and would not be capable of venting
gas. On the contrary, both patents make clear that they are used in connection with
breathing and venting a gas regulator. The Patent Owner also erroneously asserts
that internally relieved regulators were not known at the time of Peterson and
Ward. Again, the ‘029 Patent does not claim an internally relieved regulator, but
regardless, numerous internally relieved regulators pre-date Peterson and Ward.
Faced with weak support for patentability, the Patent Owner has instead
focused on various real party-in-interest and privity arguments. Even after
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multiple rounds of additional discovery, these arguments are still based on nothing
more than the Patent Owner’s conjecture and misunderstanding of AGLC’s
corporate structure. The simple facts remain that the Patent Owner sued AGLC
alleging infringement of the ‘029 Patent, AGLC timely filed its Petition, no entity
other than AGLC has funded or controlled AGLC’s role in the lawsuit or this IPR,
and AGLC has not funded or controlled any other entity in the lawsuit or this IPR.
The Patent Owner obscures these basic facts with a narrative cloud designed
to create the impression that third parties – such as AGLC’s parent holding
company or a sister company that provides support services – are the real parties-
in-interest. Not only is that factually incorrect, it is illogical that a holding
company or support services company would be the real parties-in-interest when
AGLC is the operating utility company that uses the accused devices and was sued
by the Patent Owner. The Board has already rejected similar arguments from the
Patent Owner in its institution decision and should do so again here.
Petitioner respectfully requests that the Board proceed to a final
determination that claims 1-8 of the ‘029 Patent are unpatentable over the prior art.
II. The Level of Ordinary Skill in the Art.
The Patent Owner’s argument that the Petition should be dismissed because
the Petitioner did not explicitly state the level of ordinary skill in the art has no
merit. “An invention may be held obvious without a specific finding of a
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particular level of skill where the prior art itself reflects an appropriate level [of
skill].” See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001); see also
In re Major, 2013 Pat. App. LEXIS 4370, 10-11 (Pat. App. 2013).1
Here, the level of ordinary skill in the art is reflected in the ‘029 Patent and
the cited prior art references and would be on the level of someone with a few
years of experience with designing, maintaining, or otherwise working with the
functional aspects of gas pressure regulators. (See Ex. 1030 at ¶ 6). Any
differences between the level of ordinary skill that is apparent from the prior art
and the level of skill identified by the Patent Owner (Resp. at 45) would not affect
the outcome in favor of patentability. If anything, the more stringent requirements
proposed by the Patent Owner make an obviousness result even more likely.
The Patent Owner’s related argument that the Petition is deficient because it
does not include an expert declaration is equally without merit. The basis for the
non-patentability of the ‘029 Patent is readily apparent from the prior art identified
in the Petition. Expert declarations are not required, and petitions are regularly
1 IPR2012-00005, Paper 68 and IPR2012-00042, Paper 60 (Resp. at 50-51)
do not require a petitioner to explicitly state a level of skill in the art. Rather, in
those decisions, the Board held that the patent owners had not sufficiently
addressed the prior art to meet the standard for a motion to amend.
4
submitted without them. See, e.g., 37 CFR § 42.104. The Board found that the
Petitioner demonstrated a reasonable likelihood of prevailing on almost every
ground of unpatentability asserted in the Petition. (Paper 31 at 30-31). Any
factual disputes raised in Patent Owner’s Response are addressed by the
Declaration of James Petersen submitted herewith. (Ex. 1030). Petitioner has met
its burden to identify why the claims of the ‘029 Patent are unpatentable.
III. The Bennett and Prahl Declarations Are Unreliable.
The Patent Owner relies on the declarations of Mr. Gregory Bennett (Ex.
2037) and Dr. Joseph Prahl (Ex. 2036). Neither of these declarations is reliable.
Mr. Bennett is a named inventor on the ‘029 Patent and therefore his
testimony is given little weight. See Bell & Howell Document Mgmt. Prod. Co. v.
Altek Sys., 132 F.3d 701, 706 (Fed. Cir. 1997). Indeed, Mr. Bennett has
acknowledged that he has a financial interest in preserving the validity of the ‘029
Patent. (See Ex. 1031 at 12:25-13:8 (“Q. Do you stand to benefit financially based
on the outcome of this case? A. I would absolutely say yes.”).
Dr. Prahl opines on the mass flow of gas through vent skirts, but his
declaration is riddled with fatal errors. For example, Dr. Prahl purported to
calculate the mass flow for an embodiment disclosed in Peterson based on
dimensions he “measured” from the figures. (Ex. 1032 at 61:4-62:21). Dr. Prahl
acknowledges that the Peterson figures are not to scale. (Id. at 62:9-16). As such,
5
his entire calculation is unreliable on that basis alone. See Nystrom v. Trex Co.,
424 F.3d 1136, 1149 (Fed. Cir. 2005) (“arguments based on drawings not
explicitly made to scale in issued patents are unavailing”).
Dr. Prahl also purported to compare the result he “measured” from the
Peterson figures with the mass flow of the device claimed in the ‘029 Patent. (Ex.
2036 ¶ 6). His declaration included no calculation for the ‘029 Patent, and at his
deposition, Dr. Prahl acknowledged that the comparison was to a purported
physical embodiment – not the ‘029 Patent. (Ex. 1032 at 137:3-139:12). And,
despite his conclusion focusing on the space between the baffle and skirt, the
device Dr. Prahl “measured” did not include a baffle. (Id. at 137:22-138:6).
These deficiencies unfortunately are not surprising as Dr. Prahl’s testimony
has been discounted in at least three previous proceedings. See, e.g., Douglas
Dynamics, LLC v. Buyers Prods. Co., 745 F. Supp. 2d 876, 882 (W.D. Wis. 2010)
(finding that Dr. Prahl offered “mere conclusory statements”); MPT, Inc. v.
Marathon Labels, Inc., Case No. 1:04-cv-2357, 2006 U.S. Dist. LEXIS 38980, at
*8 (N.D. Ohio Jun. 13, 2006) (striking testimony as inconsistent with the court’s
claim construction); Strickling v. Joe Behr Plumbing and Heating, Inc., Case No.
98CA104, 1999 Ohio App. LEXIS 4254, at *8-12 (Ohio App. Aug. 27, 1999)
(affirming finding that “Dr. Prahl’s opinions were not based upon a reliable
foundation”). The Board should likewise give his testimony no weight here.
6
IV. The Board Should Decline To Read Limitations Into The ‘029 Patent.
Patent Owner attempts to distinguish the prior art through limitations that are
not stated in the claims. The Board should decline to read in these limitations.
A. Internally Relieved Regulator.
The Patent Owner’s Response includes an extensive discussion on internally
relieved and externally relieved gas pressure regulators. This discussion is not
supported by the claims or specification of the ‘029 Patent, however. Indeed,
despite a detailed recitation in the ‘029 Patent of the components found in a
“typical” gas pressure regulator, the ‘029 Patent includes no reference to internal
relief or internal relief mechanisms. (See Ex. 1014 at 3:1-4, 9-36).
The Patent Owner argues that the regulator profile shown in the figures of
the ‘029 Patent indicates internal relief. But, at his deposition, Mr. Bennett could
not identify any internal relief mechanism. (Ex. 1031 at 83:7-18 (“I got to admit
the drawing on Number 2 it’s not a fair drawing to actually show you that.”);
77:25-78:8; 79:18-80:3; 154:17-22). And, as Mr. Petersen explains, regulators
may have the same profile with or without internal relief. (Ex. 1030 ¶¶ 14-15).
Both types of regulators were in use at the time the application that led to the
‘029 Patent was filed and are still in use today. (Ex. 1031 at 33:19-23, 34:10-13;
Ex. 1030 ¶ 20]. As explained below, the claimed device serves the same function
– including venting gas – regardless of whether the regulator includes internal
7
relief. (Ex. 1030 ¶ 16; infra at 10). Thus, it is not surprising that the ‘029 Patent
claims are not limited to internally relieved regulators.
B. Large Vent Tube.
The Patent Owner implies that the claim terms “outlet vent tube” and “outlet
vent means” are used in a particular manner in the ‘029 Patent. (Resp. at 34).
However, the Patent Owner fails to provide a proposed construction for these
terms, or dispute the construction adopted in the Board’s institution decision.
(Paper 31 at 19 (“should be given their ordinary meaning”)).
The Bennett Declaration states that the ‘029 Patent requires a “large” vent
tube. (Ex. 2037 at 7). To the extent that is Patent Owner’s proposed construction,
it is unsupported by the intrinsic record. Neither the claims nor the specification
describe a “large” vent tube. On the contrary, the ‘029 Patent states that “the
atmospheric pressure chamber is vented to atmosphere through a small opening.”
(See Ex. 1014 at 1:43-44 (emphasis added); 3:29-30 (“small vent opening”). At
their depositions, both Bennett and Prahl acknowledged that a “large” vent tube
limitation is not in the claims. (See Ex. 1031 at 73:4-74:2; Ex. 1032 at 46:14-24).
C. Minimum Gap Between Baffle And Side Wall Of Skirt.
The Patent Owner likewise implies that the claim term “baffle
means…being spaced from the interior wall of said skirt to permit gas flow
therearound” is used in a particular manner in the ‘029 Patent. (Resp. at 34). But
8
the Patent Owner again fails to provide a proposed construction.
The Patent Owner makes various references to “substantial space” and “high
mass flow” being required. (Resp. at 15, 34, 46, 50, 52, 53). These phrases do not
appear in the claims. Both Mr. Bennett and Dr. Prahl have acknowledged that the
‘029 Patent claims do not require a specific baffle-skirt space. (Ex. 1031 at 76:22-
77:12 (“it just needs to be the proportionate size to allow gas flow around”); Ex.
1032 at 81:7-15 (“I have to agree that [the ‘029 Patent] doesn’t specify a specific
dimension”)). Dr. Prahl further acknowledged that the phrase “to permit gas flow
therearound” could mean a very small amount of gas. (Ex. 1032 at 53:13-54:7).
V. Claims 1 and 5 Of The ‘029 Patent Are Anticipated By Peterson.
The only “elements” of claims 1 and 5 that the Patent Owner contends are
not present in U.S. Pat. No. 2,620,087 (“Peterson”) are an internally relieved gas
regulator, a large outlet vent tube, and space between the baffle and interior wall of
the skirt to permit a high mass flow of gas. (Resp. at 34). As discussed above,
these limitations are not stated in claims 1 or 5. The Board should find no genuine
dispute that these claims are anticipated by Peterson on that basis alone.
It also is worth noting, however, that the Patent Owner relies on an overly
narrow reading of Peterson. For example, the Patent Owner argues that Peterson
“is used with an externally relieved regulator [that] performs only a breathing
function and not a venting function.” (Resp. at 46). On the contrary, Peterson is
9
titled “Weatherproof Breather And Relief Vent For Gas Regulators.” (Ex. 1015
(emphasis added)). Peterson further references a “breather and relief vent”
throughout and includes claims directed to a “breather cap” and to a “breather and