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Exhibit 10.42    
    

PROPRIETARY RIGHTS AND CONFIDENTIALITY AGREEMENT  

        THIS PROPRIETARY RIGHTS AND CONFIDENTIALITY AGREEMENT (this "Agreement") is made as of
[                                    ] between GT SOLAR INTERNATIONAL,
 INC. on behalf of itself and its affiliates (collectively, the
"Company") and the undersigned director ("Director"). 

        In
consideration of Director's engagement as a director of the Company and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the
parties hereto intending to be legally bound agree as follows: 

1.     Protection of Confidential Information.  

        (a)   Obligation to Maintain Confidentiality.    Director acknowledges and agrees that the continued success of the
Company depends upon the use and protection of a large body of confidential and proprietary information. All of such confidential and proprietary information now existing or to be developed in the
future will be referred to in this Agreement as "Confidential Information." Confidential Information will be interpreted as broadly as possible to include all information of any sort (whether merely
remembered or embodied in a tangible or intangible form) that is (i) related to the Company's current or potential business and (ii) is not generally or publicly known. Confidential
Information includes, without limitation, the information, observations and data obtained by Director during the course of his service as a director of the Company concerning the business and affairs
of the Company and includes third party confidential information. Therefore, Director agrees that he shall not, at any time during or after his service as a director of the Company, disclose to any
unauthorized person or use for his own account any of such Confidential Information without the prior written consent of the Company, unless and to the extent that any Confidential Information
(i) becomes generally known to and available for use by the public other than as a result of Director's acts or omissions or (ii) is required to be disclosed pursuant to any applicable
law or court order, provided that with respect to clause (ii), Director shall at the earliest practicable date provide a copy of the subpoena or court order to the Company's general counsel.
Director agrees to deliver to the Company at the end of his service as a director of the Company, or at any other time upon request, all tools, supplies and Confidential Information, along with all
copies. 

        (b)   Use of Information of Employers.    During Director's service as a director of the Company, Director is not
requested to, and shall not, use or disclose any confidential information of any employer of the Director or any other person to whom Director has an obligation of confidentiality. 

        (c)   Additional Acknowledgments.    Director acknowledges and agrees that he has carefully read this Agreement and
has given careful consideration to the restraints imposed upon Director by this Agreement, and is in full accord as to their necessity for the reasonable and proper protection of Confidential
Information of the Company. Director expressly acknowledges and agrees that each and every restraint imposed by this Agreement is reasonable with respect to subject matter, time period and
geographical area. 

2.     Miscellaneous.  

        (a)   No Guarantee.    This Agreement shall not be construed and is not intended by either Director or the Company to
be a guarantee, commitment or understanding of Director's continued service as a director of the Company for any period of time. 

        (b)   Remedies.    Because Director's services are unique and because Director has access to Confidential Information
and Developments, the parties hereto agree that money damages would not be an adequate remedy for any breach of this Agreement. Therefore, in the event of a breach or 

1

 

threatened
breach of this Agreement, the Company, in addition to other rights and remedies existing in its favor, shall be entitled to specific performance and/or injunctive or other equitable relief
from a court of competent jurisdiction in order to enforce, or prevent any violations of, the provisions hereof (without posting a bond or other security). 

        (c)   Survival.    Director's obligations under this Agreement shall survive termination of Director's service as a
director of the Company and shall thereafter be enforceable whether or not such termination is later claimed or found to be wrongful or to constitute or result in a breach of any contract or of any
other duty owed or claimed to be owned by the Company to Director. 

        (d)   Entire Agreement.    This Agreement supersedes all prior agreements between the Company and Director related to
the subject matter hereto, and cannot be modified except in writing signed by the parties hereto. 

        (e)   Assignment.    This Agreement shall be binding upon Director and his heirs, successors and legal
representatives and shall be binding upon and inure to the benefit of the Company and its successors and assigns. The Company may freely assign this Agreement. Director not assign this Agreement or
his rights and obligations hereunder. 

        (f)    Governing Law.    This Agreement shall be governed by the laws of the State of Delaware (without reference to
conflict of laws provisions). 

        (g)   Representations.    Director represents that there is no agreement with any other party that would conflict
with his obligations under this Agreement Director represents and warrants that he (i) has read and understands each and every provision of this Agreement, (ii) has had the opportunity
to obtain advice from legal counsel of his choice in order to interpret any and all provisions of this Agreement and (iii) has had the opportunity to ask the Company questions about this
Agreement and any of such questions he has asked have been answered to his satisfaction. 

EXECUTED
this                        day
of                                    2008. 

	

Sign:	
 	

	
 	

Witness:	
 	

	

Print Name:	
 	

	
 	

Print Name:	
 	

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Exhibit 10.43    
    

GT SOLAR INCORPORATED EMPLOYEE, NON-COMPETITION, NON-DISCLOSURE,

PROPRIETARY INFORMATION AND PATENT AND INVENTION

ASSIGNMENT AGREEMENT  

        In consideration of my employment or continued employment, as the case may be, with GT Solar Incorporated (the "Company"), and the compensation received by me
from the Company, from time to time, I hereby agree with the Company as follows: 

	1.
	Proprietary Information and Inventions—I understand and acknowledge that:

	A.
	The
Company is engaged in a continuous program of research, design, development, production, marketing and servicing with respect to its business and that as part of my employment by
the Company, I am (or may be), expected to make new contributions and inventions of value to the Company.

	B.
	My
employment creates a relationship of confidence and trust between me and the Company with respect to certain information applicable to the business of the Company or applicable to
the business of any client or customer of the Company, which may be made known to me by the Company or by any client or customer of the Company, or learned by me during the period of my employment.

	C.
	The
Company possesses, and will continue to possess, information that has been created, discovered or developed by, or otherwise become known to, the Company (including, without
limitation, information created, discovered, developed or made known by me during the period of or arising out of my employment by the Company, whether before or after the date hereof) or in which
property rights have been or may be assigned or otherwise conveyed to the Company, which information has commercial value in the business in which the Company is engaged and is treated by the Company
as confidential. All such information is hereinafter called "Proprietary Information", which term, as used herein, shall also include, but shall not be limited to, systems, processes, formulae, data,
functional specifications, computer programs, blueprints, know-how, improvements, discoveries, developments, designs, inventions, techniques, marketing plans, strategies, forecasts, new
products, unpublished financial statements, budgets, projections, licenses, prices, costs and customer and supplier lists; provided, however, that the term "Proprietary Information" shall not include
any of the foregoing which is in the public domain.

	D.
	All
existing confidential lists of customers of the Company, and all confidential lists of customers of the Company developed during the course of my employment by the Company, are and
shall be the sole and exclusive property of the Company, and that I neither have nor shall have any right, title or interest therein; such lists of customers are and must continue to be confidential;
and the Company's present and future business relationship with its customers is and will continue to be of a type which normally continues unless interfered with by others.

	E.
	As
used herein, the period of my employment includes any time during which I may be retained by the Company as an Independent Contractor.

	2.
	Ownership of Proprietary Information—All Proprietary Information shall be the sole property of the Company and its assigns,
and the Company and its assigns shall be the sole owner of all 

patents,
copyrights, trademarks and other rights in connection therewith. I hereby assign to the Company any rights I may have or acquire in such Proprietary Information. I hereby acknowledge that all
Proprietary Information is and must continue to be confidential and that the same is not readily accessible to competitors of the Company. At all times, both during my employment by the Company and
after its termination, I will keep in strictest confidence and trust all Proprietary Information and I will not use or disclose any Proprietary Information without the written consent of the Company,
except as may be necessary in the ordinary course of performing my duties as an employee of the Company. 

	3.
	Commitment to Company; Other Employment—During the period of my employment by the Company, I will devote substantially all
of my time for the Company and I will not, without the Company's prior written consent, engage in any employment or business other than for the Company.

	4.
	Documentation—In the event of the termination of my employment for any reason, I will deliver to the Company all documents,
notes, drawings, blueprints, formulae, specifications, computer programs, data and other materials of any nature pertaining to any Proprietary Information or to my work with the Company, and will not
take any of the foregoing or any reproduction of any of the foregoing that is embodied in a tangible medium of expression.

	5.
	Disclosure of Inventions—I will promptly disclose to the Company (or any persons designated by it) all discoveries,
developments, designs, improvements, inventions, blueprints, formulae, processes, techniques, computer programs, strategies, know-how and data, whether or not patentable or registerable
under copyright or similar statutes, made or conceived or reduced to practice or learned by me, either alone or jointly with others, during the period of my employment that are related to the business
of the Company or that result from tasks assigned to me by the Company or that result from the use of premises or property (including computer systems and engineering facilities) owned, leased or
contracted for by the Company (all such discoveries, developments, designs, improvements, inventions, formulae, processes, techniques, computer programs, strategies, blueprints, know-how
and data are hereinafter referred to as "Inventions"). I will also promptly disclose to the Company, and the Company hereby agrees to receive all such disclosures in confidence, all other discoveries,
developments, designs, improvements, inventions, formulae, processes, techniques, computer programs, strategies, blueprints, know-how and data, whether or not patentable or registerable
under copyright or similar statutes, made or conceived or reduced to practice or learned by me, either alone or jointly with others, during the period of my employment for the purpose of determining
whether they constitute "Inventions", as defined above.

	6.
	Ownership of Inventions—All Inventions shall be the sole property of the Company and its assigns, and the Company and its
assigns shall be the sole owner of all patents, copyrights, trademarks and other rights in connection therewith. I hereby assign to the Company any rights I may have or acquire in such Inventions. I
shall assist the Company in every proper way as to all such Inventions (but at the Company's expense) to obtain and, from time to time, enforce patents, copyrights, trademarks and other rights and
protections relating to said Inventions in any and all countries, and to that end, I will execute all documents for use in applying for and obtaining such patents, copyrights, trademarks and other
rights and protections on and enforcing such Inventions, as the Company may desire, together with any assignments thereof to the Company or persons designated by it. My obligation to assist the
Company in obtaining and enforcing patents, copyrights, trademarks and other rights and protections relating to such Inventions in any and all countries shall continue beyond the termination of my
employment, but the Company shall compensate me at a reasonable rate after my termination for time actually spent by me at the 

Company's
request on such assistance. In the event the Company is unable, after reasonable effort, to secure my signature on any document or documents needed to apply for or prosecute any patent,
copyright or other right or protection relating to an Invention, for any reason whatsoever, I hereby irrevocably designate and appoint the Company and its duly authorized officers and agents as my
agent and attorney-in-fact, to act for and on my behalf to execute and file any such application or applications and to do all other lawfully permitted acts to further the
prosecution and issuance of patents, copyrights or similar protections thereon with the same legal force and effect as if executed by me and I hereby ratify, affirm and approve all such lawfully
permitted acts accordingly. 

	7.
	Other Agreements—I represent and warrant that my execution and delivery of this Agreement and the performance of all the
terms of this Agreement does not and will not breach any agreement to keep in confidence proprietary information acquired by me in confidence or trust. I have not entered into and shall not enter into
any agreement, either written or oral, in conflict herewith.

	8.
	Use of Confidential Information of Other Persons—I represent that I have not brought and will not bring with me to the
Company or use at the Company any materials or documents of an employer or a former employer that are not generally available to the public, unless express written authorization from such employer for
their possession and use has been obtained. I also understand that I am not to breach any obligation of confidentiality that I have to any employer or former employer and agree to fulfill all such
obligations during the period of my affiliation with the Company.

	9.
	Restrictive Covenant—I hereby acknowledge and recognize my possession of Proprietary Information and the highly competitive
nature of the business of the Company and accordingly agree that, in consideration of the premises contained herein, I will not, during the period of my employment by the Company and in the event that
my employment with the Company is terminated for any reason whatsoever and whether such termination be voluntary or involuntary, for a period of three years (3) years following such
termination, (i) directly or indirectly engage in any competitive business (defined as a business that designs, develops, manufactures, markets or sells a product, product line or service that
competes with any product, product line or service of the Company as they presently exist or as may be in existence or development on the date of termination of my employment with the Company whether
such engagement shall be as an employer, officer, director, owner, employee, partner or other participant, (ii) assist others in engaging in any competitive business in the manner described in
the foregoing clause (i), or (iii) induce employees of the Company, its affiliates or subsidiaries to terminate their employment with the Company or such affiliate or subsidiary and/or
engage in any competitive business. I understand that this Section 9 is not meant to prevent me from earning a living or fostering my career. It does intend, however, to prevent any competitive
business from gaining any unfair advantage from my knowledge of Proprietary Information. I understand that by making my new employer aware of the provisions of this Section 9, they can take
such action as to avoid my breaching the provisions hereof and to indemnify me in the even of a breach.

	10.
	Agreement Not to Solicit Customers—During the course of my employment by the Company for a period of three (3) years
following the termination of such employment for any reason whatsoever and whether such termination be voluntary or involuntary, I will not, directly or indirectly, as owner, officer, director,
stockholder, partner, associate, consultant, manager, advisor, representative, employee, agent, creditor or otherwise, attempt to solicit or in any other way disturb or service any person, firm or
corporation that has been a customer account of the Company at any time or times within three (3) years prior to the termination date of my 

employment,
whether or not I had direct account responsibility for a contact with such customer account. 

	11.
	Remedies—I acknowledge that a remedy at law for any breach or threatened breach of the provisions of this Agreement would
be inadequate and, therefore, agree that the Company shall be entitled to injunctive relief in addition to any other available rights and remedies in case of any such breach or threatened breach;
provided, however, that nothing contained herein shall be construed as prohibiting the Company from pursuing any other remedies available for any such breach or threatened breach.

	12.
	Assignment—This Agreement and the rights and obligations of the parties hereto shall bind and inure to the benefit of any
successor or successors of the Company, whether by reorganization, merger, consolidation, sale of assets or otherwise, except that neither this Agreement nor any rights or benefits hereunder may be
assigned by me.

	13.
	Interpretation—It is the desire and intent of the parties hereto that the provisions of this Agreement shall be enforced to
the fullest extent permissible under the laws and public policies applied in each jurisdiction in which enforcement is sought. Accordingly, if any particular provision of this Agreement shall be
adjudicated to be invalid or unenforceable, such provision shall be deemed amended to delete there from the portion thus adjudicated to be invalid or unenforceable, such deletion to apply only with
respect to the operation of such provision in the particular jurisdiction in which such adjudication is made. In addition, if any one or more of the provisions contained in this Agreement shall, for
any reason, be held to be excessively broad as to duration, geographical scope, activity or subject, it shall be construed by limiting and reducing it so as to be enforceable to the extent compatible
with the applicable law as it shall then appear.

	14.
	Notices—Any notice which a party is required or may desire to give pursuant to this Agreement shall be given by personal
delivery or registered or certified mail, return receipt requested, addressed to the Employee at the address of the Employee of record with the Company and addressed to the Company at its principal
office, or at such other place as either party may, from time to time, designate in writing. The date of personal delivery or the date of mailing any such notice shall be deemed to be the date of
delivery thereof.

	15.
	Waivers—If either party shall waive any breach of any provision of this Agreement, her or it shall not thereby be deemed to
have waived any preceding or succeeding breach of the same or any other provision of this Agreement.

	16.
	Headings—The headings of the sections hereof are inserted for convenience only and shall not be deemed to constitute a part
hereof nor to affect the meaning hereof.

	17.
	Governing Law—This Agreement shall be governed by and construed and enforced in accordance with the laws of the State of
New Hampshire with respect to contracts made and to be performed wholly therein.

	18.
	No Employment Agreement—I acknowledge that this Agreement does not constitute an employment agreement and agree that this
Agreement shall be binding upon me regardless of whether or not my employment shall continue for any length of time hereafter and whether or not my employment is terminated for any reason whatsoever
by either the Company or me or both.

	19.
	Complete Agreement; Amendments: Prior Agreements—The foregoing is the entire agreement of the parties with respect to the
subject matter hereof and may not be amended, 

supplemented,
canceled or discharged except by written instrument executed by both parties hereto. This Agreement supersedes any and all prior agreements between the parties hereto with respect to the
matters covered hereby. 

	Date:	 	1/07/08
	 	/s/ Robert W. Woodbury
 Employee

Accepted
and agreed to as of this date by GT Solar Incorporated 

	Date:	 	 	 	By:	 	 
	 	 	
	 	 	 	

	 	 	 	 	Name:	 	 
	 	 	 	 	Title:	 	 

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Exhibit 10.43

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