MEMORANDUM ORDER

I. BACKGROUND

The parties in this patent ease dispute whether the court’s permanent protective order should include a provision preventing any of plaintiffs trial counsel with exposure to defendants’ confidential information from participating in amendment of plaintiffs patents on reexamination. Following a teleconference on this issue, the court requested and received additional submissions from the parties.1 Having considered these submissions and the relevant law, the court concludes that plaintiff should not be denied the advice of its trial counsel in amending claims on reexamination, and adopts plaintiffs proposed language for its permanent protective order.

II. LEGAL STANDARD

A party seeking a protective order has the burden of showing good cause for its issuance.2 The same is true for a party seeking to include in a protective order a provision effecting a prosecution bar.3

Prior to the recent case of In re Deutsche Bank Trust Co.,4 the Federal Circuit had not issued a published opinion addressing when an attorney’s activities in prosecuting patents on behalf of a client raises an unacceptable risk of inadvertent disclosure of confidential information. The Deutsche Bank court drew on the analysis of U.S. Steel Corp. v. United States, which stated that “[w]hether an unacceptable opportunity for inadvertent disclosure exists ... must be determined ... by the facts on a counsel-by-counsel basis....”5 The U.S. Steel court instructed that this determination should turn on the extent to which counsel is involved in “competitive decision making” with its client, defined as:

activities, association, and relationship with a client [involving] counsel’s advice and participation in any or all of the client’s decisions (pricing, product design, etc.) made in light of similar or corresponding information about a competitor.6

Deutsche Bank refined, U.S. Steel by clarifying that not every patent prosecution attorney is necessarily involved in competitive decisionmaking.7 In so finding, the court distinguished administrative and oversight duties from activities in which counsel play a “significant role in crafting the content of patent applications or advising clients on the direction to take their portfolios.”8 The court explained that the latter group of activities — including “strategically amending or *184surrendering claim scope during prosecution” — posed a more significant risk of inadvertent disclosure than the former.9

Even where a risk of inadvertent disclosure or competitive use exists, however, this court must balance that risk against the potential harm to the opposing party in denying it the counsel of its choice.10 In evaluating this potential harm, a court should consider such things as

the extent and duration of counsel’s past history in representing the client before the [Patent and Trademark Office (“PTO”) ], the degree of the client’s reliance and dependence on that past history, and the potential difficulty the client might face if forced to rely on other counsel for the pending litigation or engage other counsel to represent it before the PTO.11

After balancing these competing interests, the court has broad discretion to decide what degree of protection is required.12

Though Deutsche Bank dealt only with provisions limiting participation in patent prosecution, the court considers its logic applicable in the context of patent reexamination as well. Just as in Deutsche Bank, the competing interests involved here pit protection of defendants’ confidential information against plaintiffs right to counsel of its choice. And just as in patent prosecution, the primary factor affecting the risk of inadvertent disclosure during reexamination is the extent to which counsel are involved in competitive decisionmaking with the client.

III. DISCUSSION

A. Risk of Inadvertent Disclosure of Confidential Information

Defendants raise a legitimate concern that their confidential information could be competitively misused in strategically narrowing plaintiffs patent claims during reexamination. Because the parties have agreed that discovery materials within the scope of the interim protective order may only be used for purposes of this litigation,13 and because the Federal Circuit has suggested that reexamination proceedings fall outside the scope of corresponding district court litigation,14 the court agrees with defendants that any use of their confidential information by plaintiff during reexamination would be improper and a violation of the interim protective order.

While acknowledging the existence of this risk, the court does not consider it “unacceptable” as delineated by U.S. Steel and Deutsche Bank. Unlike patent prosecution, reexamination is a limited proceeding assessing only the patentability of existing claims against specific prior art references.15 Defendants’ confidential information is “basically irrelevant” to that particular determination.16 Moreover, while claims may be broadened during prosecution to support new, tailor-made infringement allegations, amendments made during reexamination can only serve to narrow the original claims.17 Hence, no product that did not infringe a patent before reexamination could ever infringe that patent following reexamination.18 Furthermore, to the extent additional details *185are added to a claim in reexamination to distinguish it from the prior art, those details must already exist in the original patent’s specification.19 In any event, plaintiff will certainly seek to preserve the broadest possible reading of its claims on reexamination regardless of any insight gleaned from defendants’ confidential information.

B. Potential Harm from Limiting Choice of Counsel

In comparison to the attenuated risk of competitive misuse of defendants’ confidential information, the potential harm in denying plaintiff reexamination counsel of its choice is significant. Plaintiff clearly has a strong interest in choosing its own counsel— particularly in the complex and technical realm of patent litigation.20 Here, plaintiffs trial counsel have acquired expertise in the patents-in-suit as well as the relationship between plaintiffs claim language and the prior art. Forcing plaintiff to rely on less knowledgeable counsel during reexamination would thus increase costs and duplicate effort.

Plaintiff also has a legitimate interest in formulating a coherent and consistent litigation strategy. While a parallel reexamination proceeding may not formally be part of this litigation, choices made before the PTO nonetheless have consequences in this court. The validity of reexamined and amended claims, for example, will ultimately have to be explained and defended before a jury in this litigation.21 Trial counsel are better suited to assess claim language to this end than reexamination counsel, who practice before the PTO and do not try cases to a jury.22 Additionally, because reexamination (especially inter partes reexamination) is an increasingly important venue for challenging a patent’s validity,23 preventing trial counsel exposed to defendants’ confidential information from fully participating in reexamination proceedings would force plaintiff to split its resources between two fronts of the same war.

IV. CONCLUSION AND ORDER

In light of the above, defendants have failed to show good cause for their proposed reexamination bar. The court concludes that the risk of inadvertent or competitive use of defendants’ confidential information by plaintiffs trial counsel in evaluating potential claim amendments on reexamination is outweighed in this ease by the potential harm in denying plaintiff the full benefit of its trial

*186counsel in that venue. Therefore, IT IS ORDERED that:

1. Plaintiffs proposed language concerning paragraph 2(C) of the Agreed Protective Order (D.I.67-1) is adopted;

2. On or before September 22, 2010, the parties shall submit a permanent protective order incorporating this language as well as the court’s other decisions announced in the teleconference of August 19, 2010 (D.I.73).